Sheet Metal Gauge Conversion Tool<\/title>\n <style>\n @import url('https:\/\/fonts.googleapis.com\/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@500&display=swap');\n \n \/* All styles scoped to gauge-converter container *\/\n #gauge-converter {\n font-family: 'Inter', sans-serif;\n box-sizing: border-box;\n color: #1e293b;\n padding: 1rem;\n max-width: 72rem;\n margin: 0 auto;\n }\n \n @media (min-width: 768px) {\n #gauge-converter {\n padding: 2rem;\n }\n }\n \n #gauge-converter *,\n #gauge-converter *::before,\n #gauge-converter *::after {\n box-sizing: border-box;\n }\n \n #gauge-converter .gc-title {\n font-size: 1.5rem;\n font-weight: 700;\n color: #1e293b;\n margin-bottom: 1.5rem;\n }\n \n #gauge-converter .mono {\n font-family: 'JetBrains Mono', monospace;\n }\n \n #gauge-converter .glass-card {\n background: #f8fafc;\n border: 1px solid #e2e8f0;\n box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);\n border-radius: 1rem;\n padding: 1.5rem;\n margin-bottom: 2rem;\n }\n \n @media (min-width: 768px) {\n #gauge-converter .glass-card {\n padding: 2rem;\n }\n }\n \n #gauge-converter .gc-section {\n margin-bottom: 2rem;\n }\n \n #gauge-converter .gc-label {\n display: block;\n font-size: 0.875rem;\n font-weight: 600;\n color: #475569;\n margin-bottom: 0.75rem;\n text-transform: uppercase;\n letter-spacing: 0.05em;\n }\n \n #gauge-converter .gc-btn-grid {\n display: grid;\n grid-template-columns: repeat(2, 1fr);\n gap: 0.75rem;\n }\n \n @media (min-width: 768px) {\n #gauge-converter .gc-btn-grid {\n grid-template-columns: repeat(4, 1fr);\n }\n }\n \n #gauge-converter .material-btn {\n padding: 0.75rem 1rem;\n border-radius: 0.5rem;\n font-weight: 500;\n font-size: 1rem;\n transition: all 0.2s ease;\n cursor: pointer;\n outline: none !important;\n box-shadow: none !important;\n border: none !important;\n text-decoration: none !important;\n background-color: #e2e8f0 !important;\n color: #334155 !important;\n }\n \n #gauge-converter .material-btn:hover,\n #gauge-converter .material-btn:focus,\n #gauge-converter .material-btn:active {\n outline: none !important;\n box-shadow: none !important;\n border: none !important;\n text-decoration: none !important;\n background-color: #e2e8f0 !important;\n color: #334155 !important;\n }\n \n #gauge-converter .material-btn.active {\n background-color: #2563eb !important;\n color: #ffffff !important;\n }\n \n #gauge-converter .material-btn.active:hover,\n #gauge-converter .material-btn.active:focus,\n #gauge-converter .material-btn.active:active {\n background-color: #2563eb !important;\n color: #ffffff !important;\n }\n \n #gauge-converter .gc-input-grid {\n display: grid;\n grid-template-columns: 1fr;\n gap: 1.5rem;\n }\n \n @media (min-width: 768px) {\n #gauge-converter .gc-input-grid {\n grid-template-columns: repeat(3, 1fr);\n }\n }\n \n #gauge-converter .gc-input-group {\n display: flex;\n flex-direction: column;\n gap: 0.5rem;\n }\n \n #gauge-converter .gc-input-wrapper {\n position: relative;\n }\n \n #gauge-converter .input-field {\n background: #ffffff !important;\n border: 1px solid #cbd5e1 !important;\n transition: all 0.2s ease !important;\n color: #1e293b !important;\n border-radius: 0.5rem !important;\n padding: 1rem !important;\n font-size: 1.25rem !important;\n line-height: 1.75rem !important;\n width: 100% !important;\n height: auto !important;\n -webkit-appearance: none !important;\n -moz-appearance: none !important;\n appearance: none !important;\n font-family: 'JetBrains Mono', monospace !important;\n }\n \n #gauge-converter .input-field:focus {\n border-color: #3b82f6 !important;\n box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2) !important;\n outline: none !important;\n }\n \n #gauge-converter .input-field:hover {\n border-color: #cbd5e1 !important;\n }\n \n #gauge-converter select.input-field {\n background-image: url(\"data:image\/svg+xml,%3csvg xmlns='http:\/\/www.w3.org\/2000\/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'\/%3e%3c\/svg%3e\") !important;\n background-position: right 0.5rem center !important;\n background-repeat: no-repeat !important;\n background-size: 1.5em 1.5em !important;\n padding-right: 2.5rem !important;\n cursor: pointer;\n }\n \n #gauge-converter input.input-field {\n padding-right: 3rem !important;\n }\n \n #gauge-converter input.input-field::-webkit-outer-spin-button,\n #gauge-converter input.input-field::-webkit-inner-spin-button {\n -webkit-appearance: none !important;\n margin: 0 !important;\n }\n \n #gauge-converter input.input-field[type=number] {\n -moz-appearance: textfield !important;\n }\n \n #gauge-converter .copy-btn {\n position: absolute;\n right: 0.5rem;\n top: 50%;\n transform: translateY(-50%);\n padding: 0.5rem;\n border-radius: 0.375rem;\n color: #94a3b8;\n background: transparent;\n border: none;\n cursor: pointer;\n transition: all 0.15s ease;\n }\n \n #gauge-converter .copy-btn:hover {\n background: rgba(59, 130, 246, 0.1);\n color: #334155;\n }\n \n #gauge-converter .copy-btn:active {\n transform: translateY(-50%) scale(0.95);\n }\n \n #gauge-converter .copy-btn svg {\n width: 1.25rem;\n height: 1.25rem;\n display: block;\n }\n \n #gauge-converter .gc-result {\n margin-top: 1.5rem;\n padding: 1rem;\n border-radius: 0.5rem;\n background: #eff6ff;\n border: 1px solid #bfdbfe;\n display: none;\n }\n \n #gauge-converter .gc-result.show {\n display: block;\n }\n \n #gauge-converter .gc-result-inner {\n display: flex;\n align-items: center;\n justify-content: space-between;\n }\n \n #gauge-converter .gc-result-label {\n font-size: 0.875rem;\n color: #64748b;\n }\n \n #gauge-converter .gc-result-text {\n font-size: 1.25rem;\n font-weight: 600;\n color: #2563eb;\n font-family: 'JetBrains Mono', monospace;\n margin: 0;\n }\n \n #gauge-converter .gc-result-diff {\n font-size: 0.875rem;\n color: #64748b;\n }\n \n #gauge-converter .gc-result-copy {\n padding: 0.5rem;\n border-radius: 0.375rem;\n color: #94a3b8;\n background: transparent;\n border: none;\n cursor: pointer;\n transition: all 0.15s ease;\n }\n \n #gauge-converter .gc-result-copy:hover {\n background: rgba(59, 130, 246, 0.1);\n color: #334155;\n }\n \n #gauge-converter .gc-result-copy svg {\n width: 1.25rem;\n height: 1.25rem;\n display: block;\n }\n \n #gauge-converter .gc-toast {\n position: fixed;\n bottom: 1rem;\n right: 1rem;\n background: #16a34a;\n color: #ffffff;\n padding: 0.5rem 1rem;\n border-radius: 0.5rem;\n box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);\n display: flex;\n align-items: center;\n gap: 0.5rem;\n transform: translateY(5rem);\n opacity: 0;\n transition: all 0.3s ease;\n z-index: 9999;\n }\n \n #gauge-converter .gc-toast.show {\n transform: translateY(0);\n opacity: 1;\n }\n \n #gauge-converter .gc-toast svg {\n width: 1.25rem;\n height: 1.25rem;\n }\n <\/style>\n<\/head>\n<body>\n <div id=\"gauge-converter\">\n <h2 class=\"gc-title\">Calculator<\/h2>\n \n <div class=\"glass-card\">\n \n <div class=\"gc-section\">\n <label class=\"gc-label\">Select Material Type<\/label>\n <div class=\"gc-btn-grid\">\n <button onclick=\"setMaterial('steel')\" id=\"btn-steel\" class=\"material-btn active\">\n Steel (Carbon)\n <\/button>\n <button onclick=\"setMaterial('galvanized')\" id=\"btn-galvanized\" class=\"material-btn\">\n Galvanized Steel\n <\/button>\n <button onclick=\"setMaterial('stainless')\" id=\"btn-stainless\" class=\"material-btn\">\n Stainless Steel\n <\/button>\n <button onclick=\"setMaterial('aluminum')\" id=\"btn-aluminum\" class=\"material-btn\">\n Aluminum\n <\/button>\n <\/div>\n <\/div>\n\n \n <div class=\"gc-input-grid\">\n \n <div class=\"gc-input-group\">\n <label class=\"gc-label\">Gauge Number<\/label>\n <select id=\"gaugeSelect\" onchange=\"convertFromGauge()\" class=\"input-field\">\n <option value=\"\">Select Gauge…<\/option>\n <\/select>\n <\/div>\n\n \n <div class=\"gc-input-group\">\n <label class=\"gc-label\">Millimeters (mm)<\/label>\n <div class=\"gc-input-wrapper\">\n <input type=\"number\" id=\"mmInput\" oninput=\"convertFromMM()\" step=\"0.01\" min=\"0\" placeholder=\"Enter mm...\" class=\"input-field\">\n <button onclick=\"copyValue('mmInput')\" class=\"copy-btn\" title=\"Copy to clipboard\">\n <svg fill=\"none\" stroke=\"currentColor\" viewBox=\"0 0 24 24\">\n <path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M8 16H6a2 2 0 01-2-2V6a2 2 0 012-2h8a2 2 0 012 2v2m-6 12h8a2 2 0 002-2v-8a2 2 0 00-2-2h-8a2 2 0 00-2 2v8a2 2 0 002 2z\"\/>\n <\/svg>\n <\/button>\n <\/div>\n <\/div>\n\n \n <div class=\"gc-input-group\">\n <label class=\"gc-label\">Inches (in)<\/label>\n <div class=\"gc-input-wrapper\">\n <input type=\"number\" id=\"inchInput\" oninput=\"convertFromInch()\" step=\"0.0001\" min=\"0\" placeholder=\"Enter inch...\" class=\"input-field\">\n <button onclick=\"copyValue('inchInput')\" class=\"copy-btn\" title=\"Copy to clipboard\">\n <svg fill=\"none\" stroke=\"currentColor\" viewBox=\"0 0 24 24\">\n <path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M8 16H6a2 2 0 01-2-2V6a2 2 0 012-2h8a2 2 0 012 2v2m-6 12h8a2 2 0 002-2v-8a2 2 0 00-2-2h-8a2 2 0 00-2 2v8a2 2 0 002 2z\"\/>\n <\/svg>\n <\/button>\n <\/div>\n <\/div>\n <\/div>\n\n \n <div id=\"resultDisplay\" class=\"gc-result\">\n <div class=\"gc-result-inner\">\n <div>\n <span class=\"gc-result-label\">Closest Match:<\/span>\n <p id=\"resultText\" class=\"gc-result-text\"><\/p>\n <\/div>\n <button onclick=\"copyResult()\" class=\"gc-result-copy\" title=\"Copy result\">\n <svg fill=\"none\" stroke=\"currentColor\" viewBox=\"0 0 24 24\">\n <path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M8 16H6a2 2 0 01-2-2V6a2 2 0 012-2h8a2 2 0 012 2v2m-6 12h8a2 2 0 002-2v-8a2 2 0 00-2-2h-8a2 2 0 00-2 2v8a2 2 0 002 2z\"\/>\n <\/svg>\n <\/button>\n <\/div>\n <\/div>\n\n \n <div id=\"gcToast\" class=\"gc-toast\">\n <svg fill=\"none\" stroke=\"currentColor\" viewBox=\"0 0 24 24\">\n <path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M5 13l4 4L19 7\"\/>\n <\/svg>\n <span>Copied to clipboard!<\/span>\n <\/div>\n <\/div>\n <\/div>\n\n <script>\n \/\/ Gauge thickness data in inches for different materials\n \/\/ Values from industry standard gauge charts\n const gaugeData = {\n steel: {\n name: 'Steel (Carbon)',\n gauges: {\n 3: 0.2391, 4: 0.2242, 5: 0.2092, 6: 0.1943, 7: 0.1793,\n 8: 0.1644, 9: 0.1495, 10: 0.1345, 11: 0.1196, 12: 0.1046,\n 13: 0.0897, 14: 0.0747, 15: 0.0673, 16: 0.0598, 17: 0.0538,\n 18: 0.0478, 19: 0.0418, 20: 0.0359, 21: 0.0329, 22: 0.0299,\n 23: 0.0269, 24: 0.0239, 25: 0.0209, 26: 0.0179, 27: 0.0164,\n 28: 0.0149, 29: 0.0135, 30: 0.0120\n }\n },\n galvanized: {\n name: 'Galvanized Steel',\n gauges: {\n 3: 0.2500, 4: 0.2344, 5: 0.2187, 6: 0.2031, 7: 0.1875,\n 8: 0.1719, 9: 0.1563, 10: 0.1406, 11: 0.1250, 12: 0.1094,\n 13: 0.0938, 14: 0.0781, 15: 0.0703, 16: 0.0625, 17: 0.0563,\n 18: 0.0500, 19: 0.0438, 20: 0.0375, 21: 0.0344, 22: 0.0313,\n 23: 0.0281, 24: 0.0250, 25: 0.0219, 26: 0.0188, 27: 0.0172,\n 28: 0.0156, 29: 0.0141, 30: 0.0125\n }\n },\n stainless: {\n name: 'Stainless Steel',\n gauges: {\n 3: 0.2500, 4: 0.2344, 5: 0.2187, 6: 0.2031, 7: 0.1875,\n 8: 0.1719, 9: 0.1563, 10: 0.1406, 11: 0.1250, 12: 0.1094,\n 13: 0.0937, 14: 0.0781, 15: 0.0703, 16: 0.0625, 17: 0.0562,\n 18: 0.0500, 19: 0.0437, 20: 0.0375, 21: 0.0344, 22: 0.0312,\n 23: 0.0281, 24: 0.0250, 25: 0.0219, 26: 0.0187, 27: 0.0172,\n 28: 0.0156, 29: 0.0141, 30: 0.0125\n }\n },\n aluminum: {\n name: 'Aluminum',\n gauges: {\n 3: 0.2294, 4: 0.2043, 5: 0.1819, 6: 0.1620, 7: 0.1443,\n 8: 0.1285, 9: 0.1144, 10: 0.1019, 11: 0.0907, 12: 0.0808,\n 13: 0.0720, 14: 0.0641, 15: 0.0571, 16: 0.0508, 17: 0.0453,\n 18: 0.0403, 19: 0.0359, 20: 0.0320, 21: 0.0285, 22: 0.0253,\n 23: 0.0226, 24: 0.0201, 25: 0.0179, 26: 0.0159, 27: 0.0142,\n 28: 0.0126, 29: 0.0113, 30: 0.0100\n }\n }\n };\n\n let currentMaterial = 'steel';\n let currentResult = '';\n\n \/\/ Initialize the page\n function init() {\n populateGaugeSelect();\n }\n\n \/\/ Set the current material\n function setMaterial(material) {\n currentMaterial = material;\n \n \/\/ Update button styles\n document.querySelectorAll('#gauge-converter .material-btn').forEach(btn => {\n btn.classList.remove('active');\n });\n document.getElementById(`btn-${material}`).classList.add('active');\n \n \/\/ Re-convert if there's a value\n const gaugeSelect = document.getElementById('gaugeSelect');\n const mmInput = document.getElementById('mmInput');\n const inchInput = document.getElementById('inchInput');\n \n if (gaugeSelect.value) {\n convertFromGauge();\n } else if (mmInput.value) {\n convertFromMM();\n } else if (inchInput.value) {\n convertFromInch();\n }\n }\n\n \/\/ Populate the gauge dropdown\n function populateGaugeSelect() {\n const select = document.getElementById('gaugeSelect');\n select.innerHTML = '<option value=\"\">Select Gauge...<\/option>';\n \n for (let gauge = 3; gauge <= 30; gauge++) {\n const option = document.createElement('option');\n option.value = gauge;\n option.textContent = `${gauge} Gauge`;\n select.appendChild(option);\n }\n }\n\n \/\/ Convert from Gauge to mm\/inch\n function convertFromGauge() {\n const gauge = document.getElementById('gaugeSelect').value;\n const mmInput = document.getElementById('mmInput');\n const inchInput = document.getElementById('inchInput');\n \n hideResult();\n \n if (!gauge) {\n mmInput.value = '';\n inchInput.value = '';\n return;\n }\n \n const inches = gaugeData[currentMaterial].gauges[gauge];\n const mm = inches * 25.4;\n \n mmInput.value = mm.toFixed(3);\n inchInput.value = inches.toFixed(4);\n }\n\n \/\/ Convert from mm to Gauge\/inch\n function convertFromMM() {\n const mm = parseFloat(document.getElementById('mmInput').value);\n const inchInput = document.getElementById('inchInput');\n const gaugeSelect = document.getElementById('gaugeSelect');\n \n if (isNaN(mm) || mm <= 0) {\n inchInput.value = '';\n gaugeSelect.value = '';\n hideResult();\n return;\n }\n \n const inches = mm \/ 25.4;\n inchInput.value = inches.toFixed(4);\n \n \/\/ Find closest gauge\n const closest = findClosestGauge(inches);\n gaugeSelect.value = closest.gauge;\n showResult(closest);\n }\n\n \/\/ Convert from inch to Gauge\/mm\n function convertFromInch() {\n const inches = parseFloat(document.getElementById('inchInput').value);\n const mmInput = document.getElementById('mmInput');\n const gaugeSelect = document.getElementById('gaugeSelect');\n \n if (isNaN(inches) || inches <= 0) {\n mmInput.value = '';\n gaugeSelect.value = '';\n hideResult();\n return;\n }\n \n const mm = inches * 25.4;\n mmInput.value = mm.toFixed(3);\n \n \/\/ Find closest gauge\n const closest = findClosestGauge(inches);\n gaugeSelect.value = closest.gauge;\n showResult(closest);\n }\n\n \/\/ Find the closest gauge for a given inch value\n function findClosestGauge(targetInches) {\n const gauges = gaugeData[currentMaterial].gauges;\n let closestGauge = 3;\n let minDiff = Infinity;\n \n for (const [gauge, inches] of Object.entries(gauges)) {\n const diff = Math.abs(inches - targetInches);\n if (diff < minDiff) {\n minDiff = diff;\n closestGauge = parseInt(gauge);\n }\n }\n \n const exactInches = gauges[closestGauge];\n const exactMM = exactInches * 25.4;\n const diffPercent = ((targetInches - exactInches) \/ exactInches * 100).toFixed(1);\n \n return {\n gauge: closestGauge,\n inches: exactInches,\n mm: exactMM,\n diffPercent: diffPercent\n };\n }\n\n \/\/ Show result display\n function showResult(closest) {\n const display = document.getElementById('resultDisplay');\n const text = document.getElementById('resultText');\n \n const diffText = closest.diffPercent == 0 ? 'Exact match' : \n (closest.diffPercent > 0 ? `+${closest.diffPercent}%` : `${closest.diffPercent}%`);\n \n currentResult = `${closest.gauge} Gauge = ${closest.mm.toFixed(3)} mm (${closest.inches.toFixed(4)} in)`;\n text.innerHTML = `${closest.gauge} Gauge = ${closest.mm.toFixed(3)} mm (${closest.inches.toFixed(4)} in) <span class=\"gc-result-diff\">[${diffText}]<\/span>`;\n \n display.classList.add('show');\n }\n\n \/\/ Hide result display\n function hideResult() {\n document.getElementById('resultDisplay').classList.remove('show');\n }\n\n \/\/ Copy value to clipboard\n function copyValue(inputId) {\n const input = document.getElementById(inputId);\n if (input.value) {\n navigator.clipboard.writeText(input.value);\n showToast();\n }\n }\n\n \/\/ Copy result to clipboard\n function copyResult() {\n if (currentResult) {\n navigator.clipboard.writeText(currentResult);\n showToast();\n }\n }\n\n \/\/ Show toast notification\n function showToast() {\n const toast = document.getElementById('gcToast');\n toast.classList.add('show');\n \n setTimeout(() => {\n toast.classList.remove('show');\n }, 2000);\n }\n\n \/\/ Initialize on load\n init();\n <\/script>\n<\/body>\n<\/html>\n\n","protected":false},"excerpt":{"rendered":"<p>The Sheet Metal Gauge Conversion Tool is a practical online calculator designed to help engineers, fabricators, and metalworking professionals quickly convert sheet metal gauge numbers…<\/p>","protected":false},"author":2,"featured_media":24224,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"pmpro_default_level":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[8413],"tags":[7148,8430,8431,2396],"class_list":["post-24214","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-unit-and-industry-standard-conversion","tag-fabrication-tools","tag-gauge-conversion","tag-metal-thickness","tag-sheet-metal","pmpro-has-access"],"acf":[],"jetpack_featured_media_url":"https:\/\/www.mechstream.com\/wp-content\/uploads\/2026\/02\/Sheet-Metal-Gauge-Conversion-Tool.png","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.mechstream.com\/ru\/wp-json\/wp\/v2\/posts\/24214","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mechstream.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.mechstream.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.mechstream.com\/ru\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mechstream.com\/ru\/wp-json\/wp\/v2\/comments?post=24214"}],"version-history":[{"count":0,"href":"https:\/\/www.mechstream.com\/ru\/wp-json\/wp\/v2\/posts\/24214\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.mechstream.com\/ru\/wp-json\/wp\/v2\/media\/24224"}],"wp:attachment":[{"href":"https:\/\/www.mechstream.com\/ru\/wp-json\/wp\/v2\/media?parent=24214"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.mechstream.com\/ru\/wp-json\/wp\/v2\/categories?post=24214"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.mechstream.com\/ru\/wp-json\/wp\/v2\/tags?post=24214"}],"curies":[{"name":"WP","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

{"id":24214,"date":"2026-02-03T01:10:43","date_gmt":"2026-02-03T01:10:43","guid":{"rendered":"https:\/\/www.mechstream.com\/?p=24214"},"modified":"2026-02-03T01:36:50","modified_gmt":"2026-02-03T01:36:50","slug":"sheet-metal-gauge-conversion-tool","status":"publish","type":"post","link":"https:\/\/www.mechstream.com\/ru\/sheet-metal-gauge-conversion-tool\/","title":{"rendered":"Sheet Metal Gauge Conversion Tool"},"content":{"rendered":"\n

The Sheet Metal Gauge Conversion Tool<\/strong> is a practical online calculator designed to help engineers, fabricators, and metalworking professionals quickly convert sheet metal gauge numbers into actual thickness values. By supporting common materials such as steel, stainless steel, and aluminum, this tool eliminates guesswork during material selection and production planning. Using a reliable Sheet Metal Gauge Conversion Tool improves design accuracy, reduces material errors, and ensures consistency across fabrication processes, making it an essential reference for sheet metal design, bending, and cutting applications.<\/p>\n\n\n\n\n\n\n \n \n Sheet Metal Gauge Conversion Tool<\/title>\n <style>\n @import url('https:\/\/fonts.googleapis.com\/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@500&display=swap');\n \n \/* All styles scoped to gauge-converter container *\/\n #gauge-converter {\n font-family: 'Inter', sans-serif;\n box-sizing: border-box;\n color: #1e293b;\n padding: 1rem;\n max-width: 72rem;\n margin: 0 auto;\n }\n \n @media (min-width: 768px) {\n #gauge-converter {\n padding: 2rem;\n }\n }\n \n #gauge-converter *,\n #gauge-converter *::before,\n #gauge-converter *::after {\n box-sizing: border-box;\n }\n \n #gauge-converter .gc-title {\n font-size: 1.5rem;\n font-weight: 700;\n color: #1e293b;\n margin-bottom: 1.5rem;\n }\n \n #gauge-converter .mono {\n font-family: 'JetBrains Mono', monospace;\n }\n \n #gauge-converter .glass-card {\n background: #f8fafc;\n border: 1px solid #e2e8f0;\n box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);\n border-radius: 1rem;\n padding: 1.5rem;\n margin-bottom: 2rem;\n }\n \n @media (min-width: 768px) {\n #gauge-converter .glass-card {\n padding: 2rem;\n }\n }\n \n #gauge-converter .gc-section {\n margin-bottom: 2rem;\n }\n \n #gauge-converter .gc-label {\n display: block;\n font-size: 0.875rem;\n font-weight: 600;\n color: #475569;\n margin-bottom: 0.75rem;\n text-transform: uppercase;\n letter-spacing: 0.05em;\n }\n \n #gauge-converter .gc-btn-grid {\n display: grid;\n grid-template-columns: repeat(2, 1fr);\n gap: 0.75rem;\n }\n \n @media (min-width: 768px) {\n #gauge-converter .gc-btn-grid {\n grid-template-columns: repeat(4, 1fr);\n }\n }\n \n #gauge-converter .material-btn {\n padding: 0.75rem 1rem;\n border-radius: 0.5rem;\n font-weight: 500;\n font-size: 1rem;\n transition: all 0.2s ease;\n cursor: pointer;\n outline: none !important;\n box-shadow: none !important;\n border: none !important;\n text-decoration: none !important;\n background-color: #e2e8f0 !important;\n color: #334155 !important;\n }\n \n #gauge-converter .material-btn:hover,\n #gauge-converter .material-btn:focus,\n #gauge-converter .material-btn:active {\n outline: none !important;\n box-shadow: none !important;\n border: none !important;\n text-decoration: none !important;\n background-color: #e2e8f0 !important;\n color: #334155 !important;\n }\n \n #gauge-converter .material-btn.active {\n background-color: #2563eb !important;\n color: #ffffff !important;\n }\n \n #gauge-converter .material-btn.active:hover,\n #gauge-converter .material-btn.active:focus,\n #gauge-converter .material-btn.active:active {\n background-color: #2563eb !important;\n color: #ffffff !important;\n }\n \n #gauge-converter .gc-input-grid {\n display: grid;\n grid-template-columns: 1fr;\n gap: 1.5rem;\n }\n \n @media (min-width: 768px) {\n #gauge-converter .gc-input-grid {\n grid-template-columns: repeat(3, 1fr);\n }\n }\n \n #gauge-converter .gc-input-group {\n display: flex;\n flex-direction: column;\n gap: 0.5rem;\n }\n \n #gauge-converter .gc-input-wrapper {\n position: relative;\n }\n \n #gauge-converter .input-field {\n background: #ffffff !important;\n border: 1px solid #cbd5e1 !important;\n transition: all 0.2s ease !important;\n color: #1e293b !important;\n border-radius: 0.5rem !important;\n padding: 1rem !important;\n font-size: 1.25rem !important;\n line-height: 1.75rem !important;\n width: 100% !important;\n height: auto !important;\n -webkit-appearance: none !important;\n -moz-appearance: none !important;\n appearance: none !important;\n font-family: 'JetBrains Mono', monospace !important;\n }\n \n #gauge-converter .input-field:focus {\n border-color: #3b82f6 !important;\n box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2) !important;\n outline: none !important;\n }\n \n #gauge-converter .input-field:hover {\n border-color: #cbd5e1 !important;\n }\n \n #gauge-converter select.input-field {\n background-image: url(\"data:image\/svg+xml,%3csvg xmlns='http:\/\/www.w3.org\/2000\/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'\/%3e%3c\/svg%3e\") !important;\n background-position: right 0.5rem center !important;\n background-repeat: no-repeat !important;\n background-size: 1.5em 1.5em !important;\n padding-right: 2.5rem !important;\n cursor: pointer;\n }\n \n #gauge-converter input.input-field {\n padding-right: 3rem !important;\n }\n \n #gauge-converter input.input-field::-webkit-outer-spin-button,\n #gauge-converter input.input-field::-webkit-inner-spin-button {\n -webkit-appearance: none !important;\n margin: 0 !important;\n }\n \n #gauge-converter input.input-field[type=number] {\n -moz-appearance: textfield !important;\n }\n \n #gauge-converter .copy-btn {\n position: absolute;\n right: 0.5rem;\n top: 50%;\n transform: translateY(-50%);\n padding: 0.5rem;\n border-radius: 0.375rem;\n color: #94a3b8;\n background: transparent;\n border: none;\n cursor: pointer;\n transition: all 0.15s ease;\n }\n \n #gauge-converter .copy-btn:hover {\n background: rgba(59, 130, 246, 0.1);\n color: #334155;\n }\n \n #gauge-converter .copy-btn:active {\n transform: translateY(-50%) scale(0.95);\n }\n \n #gauge-converter .copy-btn svg {\n width: 1.25rem;\n height: 1.25rem;\n display: block;\n }\n \n #gauge-converter .gc-result {\n margin-top: 1.5rem;\n padding: 1rem;\n border-radius: 0.5rem;\n background: #eff6ff;\n border: 1px solid #bfdbfe;\n display: none;\n }\n \n #gauge-converter .gc-result.show {\n display: block;\n }\n \n #gauge-converter .gc-result-inner {\n display: flex;\n align-items: center;\n justify-content: space-between;\n }\n \n #gauge-converter .gc-result-label {\n font-size: 0.875rem;\n color: #64748b;\n }\n \n #gauge-converter .gc-result-text {\n font-size: 1.25rem;\n font-weight: 600;\n color: #2563eb;\n font-family: 'JetBrains Mono', monospace;\n margin: 0;\n }\n \n #gauge-converter .gc-result-diff {\n font-size: 0.875rem;\n color: #64748b;\n }\n \n #gauge-converter .gc-result-copy {\n padding: 0.5rem;\n border-radius: 0.375rem;\n color: #94a3b8;\n background: transparent;\n border: none;\n cursor: pointer;\n transition: all 0.15s ease;\n }\n \n #gauge-converter .gc-result-copy:hover {\n background: rgba(59, 130, 246, 0.1);\n color: #334155;\n }\n \n #gauge-converter .gc-result-copy svg {\n width: 1.25rem;\n height: 1.25rem;\n display: block;\n }\n \n #gauge-converter .gc-toast {\n position: fixed;\n bottom: 1rem;\n right: 1rem;\n background: #16a34a;\n color: #ffffff;\n padding: 0.5rem 1rem;\n border-radius: 0.5rem;\n box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);\n display: flex;\n align-items: center;\n gap: 0.5rem;\n transform: translateY(5rem);\n opacity: 0;\n transition: all 0.3s ease;\n z-index: 9999;\n }\n \n #gauge-converter .gc-toast.show {\n transform: translateY(0);\n opacity: 1;\n }\n \n #gauge-converter .gc-toast svg {\n width: 1.25rem;\n height: 1.25rem;\n }\n <\/style>\n<\/head>\n<body>\n <div id=\"gauge-converter\">\n <h2 class=\"gc-title\">Calculator<\/h2>\n \n <div class=\"glass-card\">\n \n <div class=\"gc-section\">\n <label class=\"gc-label\">Select Material Type<\/label>\n <div class=\"gc-btn-grid\">\n <button onclick=\"setMaterial('steel')\" id=\"btn-steel\" class=\"material-btn active\">\n Steel (Carbon)\n <\/button>\n <button onclick=\"setMaterial('galvanized')\" id=\"btn-galvanized\" class=\"material-btn\">\n Galvanized Steel\n <\/button>\n <button onclick=\"setMaterial('stainless')\" id=\"btn-stainless\" class=\"material-btn\">\n Stainless Steel\n <\/button>\n <button onclick=\"setMaterial('aluminum')\" id=\"btn-aluminum\" class=\"material-btn\">\n Aluminum\n <\/button>\n <\/div>\n <\/div>\n\n \n <div class=\"gc-input-grid\">\n \n <div class=\"gc-input-group\">\n <label class=\"gc-label\">Gauge Number<\/label>\n <select id=\"gaugeSelect\" onchange=\"convertFromGauge()\" class=\"input-field\">\n <option value=\"\">Select Gauge…<\/option>\n <\/select>\n <\/div>\n\n \n <div class=\"gc-input-group\">\n <label class=\"gc-label\">Millimeters (mm)<\/label>\n <div class=\"gc-input-wrapper\">\n <input type=\"number\" id=\"mmInput\" oninput=\"convertFromMM()\" step=\"0.01\" min=\"0\" placeholder=\"Enter mm...\" class=\"input-field\">\n <button onclick=\"copyValue('mmInput')\" class=\"copy-btn\" title=\"Copy to clipboard\">\n <svg fill=\"none\" stroke=\"currentColor\" viewBox=\"0 0 24 24\">\n <path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M8 16H6a2 2 0 01-2-2V6a2 2 0 012-2h8a2 2 0 012 2v2m-6 12h8a2 2 0 002-2v-8a2 2 0 00-2-2h-8a2 2 0 00-2 2v8a2 2 0 002 2z\"\/>\n <\/svg>\n <\/button>\n <\/div>\n <\/div>\n\n \n <div class=\"gc-input-group\">\n <label class=\"gc-label\">Inches (in)<\/label>\n <div class=\"gc-input-wrapper\">\n <input type=\"number\" id=\"inchInput\" oninput=\"convertFromInch()\" step=\"0.0001\" min=\"0\" placeholder=\"Enter inch...\" class=\"input-field\">\n <button onclick=\"copyValue('inchInput')\" class=\"copy-btn\" title=\"Copy to clipboard\">\n <svg fill=\"none\" stroke=\"currentColor\" viewBox=\"0 0 24 24\">\n <path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M8 16H6a2 2 0 01-2-2V6a2 2 0 012-2h8a2 2 0 012 2v2m-6 12h8a2 2 0 002-2v-8a2 2 0 00-2-2h-8a2 2 0 00-2 2v8a2 2 0 002 2z\"\/>\n <\/svg>\n <\/button>\n <\/div>\n <\/div>\n <\/div>\n\n \n <div id=\"resultDisplay\" class=\"gc-result\">\n <div class=\"gc-result-inner\">\n <div>\n <span class=\"gc-result-label\">Closest Match:<\/span>\n <p id=\"resultText\" class=\"gc-result-text\"><\/p>\n <\/div>\n <button onclick=\"copyResult()\" class=\"gc-result-copy\" title=\"Copy result\">\n <svg fill=\"none\" stroke=\"currentColor\" viewBox=\"0 0 24 24\">\n <path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M8 16H6a2 2 0 01-2-2V6a2 2 0 012-2h8a2 2 0 012 2v2m-6 12h8a2 2 0 002-2v-8a2 2 0 00-2-2h-8a2 2 0 00-2 2v8a2 2 0 002 2z\"\/>\n <\/svg>\n <\/button>\n <\/div>\n <\/div>\n\n \n <div id=\"gcToast\" class=\"gc-toast\">\n <svg fill=\"none\" stroke=\"currentColor\" viewBox=\"0 0 24 24\">\n <path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M5 13l4 4L19 7\"\/>\n <\/svg>\n <span>Copied to clipboard!<\/span>\n <\/div>\n <\/div>\n <\/div>\n\n <script>\n \/\/ Gauge thickness data in inches for different materials\n \/\/ Values from industry standard gauge charts\n const gaugeData = {\n steel: {\n name: 'Steel (Carbon)',\n gauges: {\n 3: 0.2391, 4: 0.2242, 5: 0.2092, 6: 0.1943, 7: 0.1793,\n 8: 0.1644, 9: 0.1495, 10: 0.1345, 11: 0.1196, 12: 0.1046,\n 13: 0.0897, 14: 0.0747, 15: 0.0673, 16: 0.0598, 17: 0.0538,\n 18: 0.0478, 19: 0.0418, 20: 0.0359, 21: 0.0329, 22: 0.0299,\n 23: 0.0269, 24: 0.0239, 25: 0.0209, 26: 0.0179, 27: 0.0164,\n 28: 0.0149, 29: 0.0135, 30: 0.0120\n }\n },\n galvanized: {\n name: 'Galvanized Steel',\n gauges: {\n 3: 0.2500, 4: 0.2344, 5: 0.2187, 6: 0.2031, 7: 0.1875,\n 8: 0.1719, 9: 0.1563, 10: 0.1406, 11: 0.1250, 12: 0.1094,\n 13: 0.0938, 14: 0.0781, 15: 0.0703, 16: 0.0625, 17: 0.0563,\n 18: 0.0500, 19: 0.0438, 20: 0.0375, 21: 0.0344, 22: 0.0313,\n 23: 0.0281, 24: 0.0250, 25: 0.0219, 26: 0.0188, 27: 0.0172,\n 28: 0.0156, 29: 0.0141, 30: 0.0125\n }\n },\n stainless: {\n name: 'Stainless Steel',\n gauges: {\n 3: 0.2500, 4: 0.2344, 5: 0.2187, 6: 0.2031, 7: 0.1875,\n 8: 0.1719, 9: 0.1563, 10: 0.1406, 11: 0.1250, 12: 0.1094,\n 13: 0.0937, 14: 0.0781, 15: 0.0703, 16: 0.0625, 17: 0.0562,\n 18: 0.0500, 19: 0.0437, 20: 0.0375, 21: 0.0344, 22: 0.0312,\n 23: 0.0281, 24: 0.0250, 25: 0.0219, 26: 0.0187, 27: 0.0172,\n 28: 0.0156, 29: 0.0141, 30: 0.0125\n }\n },\n aluminum: {\n name: 'Aluminum',\n gauges: {\n 3: 0.2294, 4: 0.2043, 5: 0.1819, 6: 0.1620, 7: 0.1443,\n 8: 0.1285, 9: 0.1144, 10: 0.1019, 11: 0.0907, 12: 0.0808,\n 13: 0.0720, 14: 0.0641, 15: 0.0571, 16: 0.0508, 17: 0.0453,\n 18: 0.0403, 19: 0.0359, 20: 0.0320, 21: 0.0285, 22: 0.0253,\n 23: 0.0226, 24: 0.0201, 25: 0.0179, 26: 0.0159, 27: 0.0142,\n 28: 0.0126, 29: 0.0113, 30: 0.0100\n }\n }\n };\n\n let currentMaterial = 'steel';\n let currentResult = '';\n\n \/\/ Initialize the page\n function init() {\n populateGaugeSelect();\n }\n\n \/\/ Set the current material\n function setMaterial(material) {\n currentMaterial = material;\n \n \/\/ Update button styles\n document.querySelectorAll('#gauge-converter .material-btn').forEach(btn => {\n btn.classList.remove('active');\n });\n document.getElementById(`btn-${material}`).classList.add('active');\n \n \/\/ Re-convert if there's a value\n const gaugeSelect = document.getElementById('gaugeSelect');\n const mmInput = document.getElementById('mmInput');\n const inchInput = document.getElementById('inchInput');\n \n if (gaugeSelect.value) {\n convertFromGauge();\n } else if (mmInput.value) {\n convertFromMM();\n } else if (inchInput.value) {\n convertFromInch();\n }\n }\n\n \/\/ Populate the gauge dropdown\n function populateGaugeSelect() {\n const select = document.getElementById('gaugeSelect');\n select.innerHTML = '<option value=\"\">Select Gauge...<\/option>';\n \n for (let gauge = 3; gauge <= 30; gauge++) {\n const option = document.createElement('option');\n option.value = gauge;\n option.textContent = `${gauge} Gauge`;\n select.appendChild(option);\n }\n }\n\n \/\/ Convert from Gauge to mm\/inch\n function convertFromGauge() {\n const gauge = document.getElementById('gaugeSelect').value;\n const mmInput = document.getElementById('mmInput');\n const inchInput = document.getElementById('inchInput');\n \n hideResult();\n \n if (!gauge) {\n mmInput.value = '';\n inchInput.value = '';\n return;\n }\n \n const inches = gaugeData[currentMaterial].gauges[gauge];\n const mm = inches * 25.4;\n \n mmInput.value = mm.toFixed(3);\n inchInput.value = inches.toFixed(4);\n }\n\n \/\/ Convert from mm to Gauge\/inch\n function convertFromMM() {\n const mm = parseFloat(document.getElementById('mmInput').value);\n const inchInput = document.getElementById('inchInput');\n const gaugeSelect = document.getElementById('gaugeSelect');\n \n if (isNaN(mm) || mm <= 0) {\n inchInput.value = '';\n gaugeSelect.value = '';\n hideResult();\n return;\n }\n \n const inches = mm \/ 25.4;\n inchInput.value = inches.toFixed(4);\n \n \/\/ Find closest gauge\n const closest = findClosestGauge(inches);\n gaugeSelect.value = closest.gauge;\n showResult(closest);\n }\n\n \/\/ Convert from inch to Gauge\/mm\n function convertFromInch() {\n const inches = parseFloat(document.getElementById('inchInput').value);\n const mmInput = document.getElementById('mmInput');\n const gaugeSelect = document.getElementById('gaugeSelect');\n \n if (isNaN(inches) || inches <= 0) {\n mmInput.value = '';\n gaugeSelect.value = '';\n hideResult();\n return;\n }\n \n const mm = inches * 25.4;\n mmInput.value = mm.toFixed(3);\n \n \/\/ Find closest gauge\n const closest = findClosestGauge(inches);\n gaugeSelect.value = closest.gauge;\n showResult(closest);\n }\n\n \/\/ Find the closest gauge for a given inch value\n function findClosestGauge(targetInches) {\n const gauges = gaugeData[currentMaterial].gauges;\n let closestGauge = 3;\n let minDiff = Infinity;\n \n for (const [gauge, inches] of Object.entries(gauges)) {\n const diff = Math.abs(inches - targetInches);\n if (diff < minDiff) {\n minDiff = diff;\n closestGauge = parseInt(gauge);\n }\n }\n \n const exactInches = gauges[closestGauge];\n const exactMM = exactInches * 25.4;\n const diffPercent = ((targetInches - exactInches) \/ exactInches * 100).toFixed(1);\n \n return {\n gauge: closestGauge,\n inches: exactInches,\n mm: exactMM,\n diffPercent: diffPercent\n };\n }\n\n \/\/ Show result display\n function showResult(closest) {\n const display = document.getElementById('resultDisplay');\n const text = document.getElementById('resultText');\n \n const diffText = closest.diffPercent == 0 ? 'Exact match' : \n (closest.diffPercent > 0 ? `+${closest.diffPercent}%` : `${closest.diffPercent}%`);\n \n currentResult = `${closest.gauge} Gauge = ${closest.mm.toFixed(3)} mm (${closest.inches.toFixed(4)} in)`;\n text.innerHTML = `${closest.gauge} Gauge = ${closest.mm.toFixed(3)} mm (${closest.inches.toFixed(4)} in) <span class=\"gc-result-diff\">[${diffText}]<\/span>`;\n \n display.classList.add('show');\n }\n\n \/\/ Hide result display\n function hideResult() {\n document.getElementById('resultDisplay').classList.remove('show');\n }\n\n \/\/ Copy value to clipboard\n function copyValue(inputId) {\n const input = document.getElementById(inputId);\n if (input.value) {\n navigator.clipboard.writeText(input.value);\n showToast();\n }\n }\n\n \/\/ Copy result to clipboard\n function copyResult() {\n if (currentResult) {\n navigator.clipboard.writeText(currentResult);\n showToast();\n }\n }\n\n \/\/ Show toast notification\n function showToast() {\n const toast = document.getElementById('gcToast');\n toast.classList.add('show');\n \n setTimeout(() => {\n toast.classList.remove('show');\n }, 2000);\n }\n\n \/\/ Initialize on load\n init();\n <\/script>\n<\/body>\n<\/html>\n\n","protected":false},"excerpt":{"rendered":"<p>The Sheet Metal Gauge Conversion Tool is a practical online calculator designed to help engineers, fabricators, and metalworking professionals quickly convert sheet metal gauge numbers…<\/p>","protected":false},"author":2,"featured_media":24224,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"pmpro_default_level":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[8413],"tags":[7148,8430,8431,2396],"class_list":["post-24214","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-unit-and-industry-standard-conversion","tag-fabrication-tools","tag-gauge-conversion","tag-metal-thickness","tag-sheet-metal","pmpro-has-access"],"acf":[],"jetpack_featured_media_url":"https:\/\/www.mechstream.com\/wp-content\/uploads\/2026\/02\/Sheet-Metal-Gauge-Conversion-Tool.png","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.mechstream.com\/ru\/wp-json\/wp\/v2\/posts\/24214","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mechstream.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.mechstream.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.mechstream.com\/ru\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mechstream.com\/ru\/wp-json\/wp\/v2\/comments?post=24214"}],"version-history":[{"count":0,"href":"https:\/\/www.mechstream.com\/ru\/wp-json\/wp\/v2\/posts\/24214\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.mechstream.com\/ru\/wp-json\/wp\/v2\/media\/24224"}],"wp:attachment":[{"href":"https:\/\/www.mechstream.com\/ru\/wp-json\/wp\/v2\/media?parent=24214"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.mechstream.com\/ru\/wp-json\/wp\/v2\/categories?post=24214"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.mechstream.com\/ru\/wp-json\/wp\/v2\/tags?post=24214"}],"curies":[{"name":"WP","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}