Length & Tolerance Converter (mm\/inch)<\/title>\n <style>\n \/* Scoped styles - all styles are prefixed with .ltc-calculator to avoid affecting other elements *\/\n @import url('https:\/\/fonts.googleapis.com\/css2?family=Roboto:wght@300;400;500;700&family=Roboto+Mono:wght@400;500&display=swap');\n \n .ltc-calculator {\n font-family: 'Roboto', sans-serif;\n box-sizing: border-box;\n width: 100%;\n max-width: 896px;\n margin: 0 auto;\n padding: 16px;\n }\n \n .ltc-calculator *,\n .ltc-calculator *::before,\n .ltc-calculator *::after {\n box-sizing: border-box;\n }\n \n .ltc-calculator .ltc-mono {\n font-family: 'Roboto Mono', monospace;\n }\n \n .ltc-calculator input[type=\"number\"]::-webkit-inner-spin-button,\n .ltc-calculator input[type=\"number\"]::-webkit-outer-spin-button {\n -webkit-appearance: none;\n margin: 0;\n }\n \n .ltc-calculator input[type=\"number\"] {\n -moz-appearance: textfield;\n }\n \n .ltc-calculator .ltc-title {\n font-size: 1.25rem;\n font-weight: 600;\n color: #374151;\n margin-bottom: 16px;\n }\n \n .ltc-calculator .ltc-container {\n background-color: #ffffff;\n border-radius: 12px;\n box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);\n padding: 24px;\n display: grid;\n grid-template-columns: 1fr;\n gap: 24px;\n }\n \n @media (min-width: 768px) {\n .ltc-calculator .ltc-container {\n grid-template-columns: 1fr 1fr;\n }\n }\n \n .ltc-calculator .ltc-section {\n background-color: #ffffff;\n border-radius: 12px;\n padding: 24px;\n border: 2px solid #d1d5db;\n transition: all 0.3s ease;\n }\n \n .ltc-calculator .ltc-section:focus-within {\n transform: scale(1.02);\n }\n \n .ltc-calculator .ltc-section-header {\n font-size: 1.125rem;\n font-weight: 600;\n color: #374151;\n margin-bottom: 16px;\n display: flex;\n align-items: center;\n gap: 8px;\n }\n \n .ltc-calculator .ltc-badge-mm {\n background-color: #4b5563;\n color: #ffffff;\n padding: 4px 12px;\n border-radius: 9999px;\n font-size: 0.875rem;\n }\n \n .ltc-calculator .ltc-badge-in {\n background-color: #4b5563;\n color: #ffffff;\n padding: 4px 12px;\n border-radius: 9999px;\n font-size: 0.875rem;\n }\n \n .ltc-calculator .ltc-field-group {\n margin-bottom: 16px;\n }\n \n .ltc-calculator .ltc-label {\n display: block;\n font-size: 0.875rem;\n font-weight: 500;\n margin-bottom: 8px;\n color: #4b5563;\n }\n \n .ltc-calculator .ltc-label-green {\n color: #16a34a;\n }\n \n .ltc-calculator .ltc-label-red {\n color: #dc2626;\n }\n \n .ltc-calculator .ltc-input-base {\n font-family: 'Roboto Mono', monospace;\n width: 100%;\n padding: 12px 16px;\n font-size: 1.25rem;\n border: 2px solid #9ca3af;\n border-radius: 8px;\n background-color: #ffffff;\n outline: none;\n transition: border-color 0.2s;\n }\n \n .ltc-calculator .ltc-input-base:focus {\n border-color: #6b7280;\n }\n \n .ltc-calculator .ltc-tolerance-grid {\n display: grid;\n grid-template-columns: 1fr 1fr;\n gap: 16px;\n }\n \n .ltc-calculator .ltc-input-wrapper {\n position: relative;\n }\n \n .ltc-calculator .ltc-input-prefix {\n position: absolute;\n left: 12px;\n top: 50%;\n transform: translateY(-50%);\n font-weight: 700;\n }\n \n .ltc-calculator .ltc-input-prefix-green {\n color: #16a34a;\n }\n \n .ltc-calculator .ltc-input-prefix-red {\n color: #dc2626;\n }\n \n .ltc-calculator .ltc-input-tolerance {\n font-family: 'Roboto Mono', monospace;\n width: 100%;\n padding: 8px 16px 8px 32px;\n border: 2px solid #86efac;\n border-radius: 8px;\n background-color: #ffffff;\n outline: none;\n transition: border-color 0.2s;\n }\n \n .ltc-calculator .ltc-input-tolerance:focus {\n border-color: #22c55e;\n }\n \n .ltc-calculator .ltc-input-tolerance-red {\n border-color: #fca5a5;\n }\n \n .ltc-calculator .ltc-input-tolerance-red:focus {\n border-color: #ef4444;\n }\n \n .ltc-calculator .ltc-result {\n margin-top: 16px;\n padding: 12px;\n background-color: #ffffff;\n border-radius: 8px;\n border: 1px solid #d1d5db;\n }\n \n .ltc-calculator .ltc-result-label {\n font-size: 0.875rem;\n color: #4b5563;\n margin-bottom: 4px;\n }\n \n .ltc-calculator .ltc-result-value {\n font-family: 'Roboto Mono', monospace;\n font-size: 1.125rem;\n color: #1f2937;\n font-weight: 500;\n }\n <\/style>\n<\/head>\n<body>\n \n <div class=\"ltc-calculator\">\n <h2 class=\"ltc-title\">Calculator<\/h2>\n \n <div class=\"ltc-container\">\n \n <div class=\"ltc-section\">\n <h3 class=\"ltc-section-header\">\n <span class=\"ltc-badge-mm\">MM<\/span>\n Millimeters\n <\/h3>\n \n \n <div class=\"ltc-field-group\">\n <label class=\"ltc-label\">Base Dimension<\/label>\n <input type=\"number\" id=\"ltc-mm-base\" step=\"any\" placeholder=\"0.000\" class=\"ltc-input-base\">\n <\/div>\n \n \n <div class=\"ltc-tolerance-grid\">\n <div>\n <label class=\"ltc-label ltc-label-green\">Upper Limit (+)<\/label>\n <div class=\"ltc-input-wrapper\">\n <span class=\"ltc-input-prefix ltc-input-prefix-green\">+<\/span>\n <input type=\"number\" id=\"ltc-mm-upper\" step=\"any\" placeholder=\"0.00\" class=\"ltc-input-tolerance\">\n <\/div>\n <\/div>\n <div>\n <label class=\"ltc-label ltc-label-red\">Lower Limit (-)<\/label>\n <div class=\"ltc-input-wrapper\">\n <span class=\"ltc-input-prefix ltc-input-prefix-red\">–<\/span>\n <input type=\"number\" id=\"ltc-mm-lower\" step=\"any\" placeholder=\"0.00\" class=\"ltc-input-tolerance ltc-input-tolerance-red\">\n <\/div>\n <\/div>\n <\/div>\n \n \n <div class=\"ltc-result\">\n <div class=\"ltc-result-label\">Dimension Range:<\/div>\n <div id=\"ltc-mm-range\" class=\"ltc-result-value\">\u2014 mm<\/div>\n <\/div>\n <\/div>\n\n \n <div class=\"ltc-section\">\n <h3 class=\"ltc-section-header\">\n <span class=\"ltc-badge-in\">IN<\/span>\n Inches\n <\/h3>\n \n \n <div class=\"ltc-field-group\">\n <label class=\"ltc-label\">Base Dimension<\/label>\n <input type=\"number\" id=\"ltc-inch-base\" step=\"any\" placeholder=\"0.0000\" class=\"ltc-input-base\">\n <\/div>\n \n \n <div class=\"ltc-tolerance-grid\">\n <div>\n <label class=\"ltc-label ltc-label-green\">Upper Limit (+)<\/label>\n <div class=\"ltc-input-wrapper\">\n <span class=\"ltc-input-prefix ltc-input-prefix-green\">+<\/span>\n <input type=\"number\" id=\"ltc-inch-upper\" step=\"any\" placeholder=\"0.0000\" class=\"ltc-input-tolerance\">\n <\/div>\n <\/div>\n <div>\n <label class=\"ltc-label ltc-label-red\">Lower Limit (-)<\/label>\n <div class=\"ltc-input-wrapper\">\n <span class=\"ltc-input-prefix ltc-input-prefix-red\">–<\/span>\n <input type=\"number\" id=\"ltc-inch-lower\" step=\"any\" placeholder=\"0.0000\" class=\"ltc-input-tolerance ltc-input-tolerance-red\">\n <\/div>\n <\/div>\n <\/div>\n \n \n <div class=\"ltc-result\">\n <div class=\"ltc-result-label\">Dimension Range:<\/div>\n <div id=\"ltc-inch-range\" class=\"ltc-result-value\">\u2014 inch<\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n\n <script>\n (function() {\n \/\/ Constants\n const MM_TO_INCH = 0.0393700787401575;\n const INCH_TO_MM = 25.4;\n const PRECISION = 3;\n\n \/\/ DOM Elements\n const elements = {\n mmBase: document.getElementById('ltc-mm-base'),\n mmUpper: document.getElementById('ltc-mm-upper'),\n mmLower: document.getElementById('ltc-mm-lower'),\n mmRange: document.getElementById('ltc-mm-range'),\n inchBase: document.getElementById('ltc-inch-base'),\n inchUpper: document.getElementById('ltc-inch-upper'),\n inchLower: document.getElementById('ltc-inch-lower'),\n inchRange: document.getElementById('ltc-inch-range')\n };\n\n \/\/ Track which side is being edited to prevent circular updates\n let isUpdating = false;\n\n \/\/ Format number with specified precision\n function formatNumber(value, precision) {\n if (value === null || value === undefined || isNaN(value)) return '';\n return Number(value).toFixed(precision);\n }\n\n \/\/ Convert mm to inches\n function mmToInch(mm) {\n if (mm === null || mm === undefined || mm === '' || isNaN(parseFloat(mm))) return null;\n return parseFloat(mm) * MM_TO_INCH;\n }\n\n \/\/ Convert inches to mm\n function inchToMm(inch) {\n if (inch === null || inch === undefined || inch === '' || isNaN(parseFloat(inch))) return null;\n return parseFloat(inch) * INCH_TO_MM;\n }\n\n \/\/ Update inch values from mm\n function updateInchFromMm() {\n if (isUpdating) return;\n isUpdating = true;\n\n const mmBase = parseFloat(elements.mmBase.value);\n const mmUpper = parseFloat(elements.mmUpper.value);\n const mmLower = parseFloat(elements.mmLower.value);\n\n \/\/ Convert base dimension\n if (!isNaN(mmBase)) {\n elements.inchBase.value = formatNumber(mmToInch(mmBase), PRECISION);\n } else {\n elements.inchBase.value = '';\n }\n\n \/\/ Convert upper tolerance\n if (!isNaN(mmUpper)) {\n elements.inchUpper.value = formatNumber(mmToInch(mmUpper), PRECISION);\n } else {\n elements.inchUpper.value = '';\n }\n\n \/\/ Convert lower tolerance\n if (!isNaN(mmLower)) {\n elements.inchLower.value = formatNumber(mmToInch(mmLower), PRECISION);\n } else {\n elements.inchLower.value = '';\n }\n\n updateDisplays();\n isUpdating = false;\n }\n\n \/\/ Update mm values from inch\n function updateMmFromInch() {\n if (isUpdating) return;\n isUpdating = true;\n\n const inchBase = parseFloat(elements.inchBase.value);\n const inchUpper = parseFloat(elements.inchUpper.value);\n const inchLower = parseFloat(elements.inchLower.value);\n\n \/\/ Convert base dimension\n if (!isNaN(inchBase)) {\n elements.mmBase.value = formatNumber(inchToMm(inchBase), PRECISION);\n } else {\n elements.mmBase.value = '';\n }\n\n \/\/ Convert upper tolerance\n if (!isNaN(inchUpper)) {\n elements.mmUpper.value = formatNumber(inchToMm(inchUpper), PRECISION);\n } else {\n elements.mmUpper.value = '';\n }\n\n \/\/ Convert lower tolerance\n if (!isNaN(inchLower)) {\n elements.mmLower.value = formatNumber(inchToMm(inchLower), PRECISION);\n } else {\n elements.mmLower.value = '';\n }\n\n updateDisplays();\n isUpdating = false;\n }\n\n \/\/ Update range displays\n function updateDisplays() {\n \/\/ MM Range\n const mmBase = parseFloat(elements.mmBase.value);\n const mmUpper = parseFloat(elements.mmUpper.value) || 0;\n const mmLower = parseFloat(elements.mmLower.value) || 0;\n\n if (!isNaN(mmBase)) {\n const mmMax = mmBase + mmUpper;\n const mmMin = mmBase - mmLower;\n elements.mmRange.textContent = formatNumber(mmMin, PRECISION) + ' ~ ' + formatNumber(mmMax, PRECISION) + ' mm';\n } else {\n elements.mmRange.textContent = '\u2014 mm';\n }\n\n \/\/ Inch Range\n const inchBase = parseFloat(elements.inchBase.value);\n const inchUpper = parseFloat(elements.inchUpper.value) || 0;\n const inchLower = parseFloat(elements.inchLower.value) || 0;\n\n if (!isNaN(inchBase)) {\n const inchMax = inchBase + inchUpper;\n const inchMin = inchBase - inchLower;\n elements.inchRange.textContent = formatNumber(inchMin, PRECISION) + ' ~ ' + formatNumber(inchMax, PRECISION) + ' inch';\n } else {\n elements.inchRange.textContent = '\u2014 inch';\n }\n }\n\n \/\/ Event Listeners for MM inputs\n elements.mmBase.addEventListener('input', updateInchFromMm);\n elements.mmUpper.addEventListener('input', updateInchFromMm);\n elements.mmLower.addEventListener('input', updateInchFromMm);\n\n \/\/ Event Listeners for Inch inputs\n elements.inchBase.addEventListener('input', updateMmFromInch);\n elements.inchUpper.addEventListener('input', updateMmFromInch);\n elements.inchLower.addEventListener('input', updateMmFromInch);\n\n \/\/ Initialize\n updateDisplays();\n })();\n <\/script>\n<\/body>\n<\/html>\n\n","protected":false},"excerpt":{"rendered":"<p>Length & Tolerance Converter is a practical engineering tool designed to accurately convert length units while calculating dimensional tolerances in manufacturing and fabrication processes. It…<\/p>","protected":false},"author":2,"featured_media":24245,"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":[8437,3398,8435,8436,8417],"class_list":["post-24243","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-unit-and-industry-standard-conversion","tag-dimensional-accuracy","tag-engineering-tools","tag-length-converter","tag-tolerance-calculator","tag-unit-conversion","pmpro-has-access"],"acf":[],"jetpack_featured_media_url":"https:\/\/www.mechstream.com\/wp-content\/uploads\/2026\/02\/Length-Tolerance-Converter.png","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/posts\/24243","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/comments?post=24243"}],"version-history":[{"count":0,"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/posts\/24243\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/media\/24245"}],"wp:attachment":[{"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/media?parent=24243"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/categories?post=24243"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/tags?post=24243"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

{"id":24243,"date":"2026-02-03T07:12:30","date_gmt":"2026-02-03T07:12:30","guid":{"rendered":"https:\/\/www.mechstream.com\/?p=24243"},"modified":"2026-02-03T07:26:51","modified_gmt":"2026-02-03T07:26:51","slug":"length-tolerance-converter","status":"publish","type":"post","link":"https:\/\/www.mechstream.com\/fr\/length-tolerance-converter\/","title":{"rendered":"Length & Tolerance Converter"},"content":{"rendered":"\n

Length & Tolerance Converter<\/strong> is a practical engineering tool designed to accurately convert length units while calculating dimensional tolerances in manufacturing and fabrication processes. It helps engineers, designers, and quality control teams quickly switch between metric and imperial units, such as mm, cm, inches, and microns, while ensuring tolerance values remain consistent and compliant with technical standards. By using a reliable Length & Tolerance Converter, users can reduce calculation errors, improve drawing interpretation, and maintain precision across machining, bending, and inspection stages. This converter is especially valuable for sheet metal fabrication, CNC machining, and industrial equipment production where tight tolerances directly affect product quality and assembly accuracy.<\/p>\n\n\n\n\n\n\n \n \n \n Length & Tolerance Converter (mm\/inch)<\/title>\n <style>\n \/* Scoped styles - all styles are prefixed with .ltc-calculator to avoid affecting other elements *\/\n @import url('https:\/\/fonts.googleapis.com\/css2?family=Roboto:wght@300;400;500;700&family=Roboto+Mono:wght@400;500&display=swap');\n \n .ltc-calculator {\n font-family: 'Roboto', sans-serif;\n box-sizing: border-box;\n width: 100%;\n max-width: 896px;\n margin: 0 auto;\n padding: 16px;\n }\n \n .ltc-calculator *,\n .ltc-calculator *::before,\n .ltc-calculator *::after {\n box-sizing: border-box;\n }\n \n .ltc-calculator .ltc-mono {\n font-family: 'Roboto Mono', monospace;\n }\n \n .ltc-calculator input[type=\"number\"]::-webkit-inner-spin-button,\n .ltc-calculator input[type=\"number\"]::-webkit-outer-spin-button {\n -webkit-appearance: none;\n margin: 0;\n }\n \n .ltc-calculator input[type=\"number\"] {\n -moz-appearance: textfield;\n }\n \n .ltc-calculator .ltc-title {\n font-size: 1.25rem;\n font-weight: 600;\n color: #374151;\n margin-bottom: 16px;\n }\n \n .ltc-calculator .ltc-container {\n background-color: #ffffff;\n border-radius: 12px;\n box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);\n padding: 24px;\n display: grid;\n grid-template-columns: 1fr;\n gap: 24px;\n }\n \n @media (min-width: 768px) {\n .ltc-calculator .ltc-container {\n grid-template-columns: 1fr 1fr;\n }\n }\n \n .ltc-calculator .ltc-section {\n background-color: #ffffff;\n border-radius: 12px;\n padding: 24px;\n border: 2px solid #d1d5db;\n transition: all 0.3s ease;\n }\n \n .ltc-calculator .ltc-section:focus-within {\n transform: scale(1.02);\n }\n \n .ltc-calculator .ltc-section-header {\n font-size: 1.125rem;\n font-weight: 600;\n color: #374151;\n margin-bottom: 16px;\n display: flex;\n align-items: center;\n gap: 8px;\n }\n \n .ltc-calculator .ltc-badge-mm {\n background-color: #4b5563;\n color: #ffffff;\n padding: 4px 12px;\n border-radius: 9999px;\n font-size: 0.875rem;\n }\n \n .ltc-calculator .ltc-badge-in {\n background-color: #4b5563;\n color: #ffffff;\n padding: 4px 12px;\n border-radius: 9999px;\n font-size: 0.875rem;\n }\n \n .ltc-calculator .ltc-field-group {\n margin-bottom: 16px;\n }\n \n .ltc-calculator .ltc-label {\n display: block;\n font-size: 0.875rem;\n font-weight: 500;\n margin-bottom: 8px;\n color: #4b5563;\n }\n \n .ltc-calculator .ltc-label-green {\n color: #16a34a;\n }\n \n .ltc-calculator .ltc-label-red {\n color: #dc2626;\n }\n \n .ltc-calculator .ltc-input-base {\n font-family: 'Roboto Mono', monospace;\n width: 100%;\n padding: 12px 16px;\n font-size: 1.25rem;\n border: 2px solid #9ca3af;\n border-radius: 8px;\n background-color: #ffffff;\n outline: none;\n transition: border-color 0.2s;\n }\n \n .ltc-calculator .ltc-input-base:focus {\n border-color: #6b7280;\n }\n \n .ltc-calculator .ltc-tolerance-grid {\n display: grid;\n grid-template-columns: 1fr 1fr;\n gap: 16px;\n }\n \n .ltc-calculator .ltc-input-wrapper {\n position: relative;\n }\n \n .ltc-calculator .ltc-input-prefix {\n position: absolute;\n left: 12px;\n top: 50%;\n transform: translateY(-50%);\n font-weight: 700;\n }\n \n .ltc-calculator .ltc-input-prefix-green {\n color: #16a34a;\n }\n \n .ltc-calculator .ltc-input-prefix-red {\n color: #dc2626;\n }\n \n .ltc-calculator .ltc-input-tolerance {\n font-family: 'Roboto Mono', monospace;\n width: 100%;\n padding: 8px 16px 8px 32px;\n border: 2px solid #86efac;\n border-radius: 8px;\n background-color: #ffffff;\n outline: none;\n transition: border-color 0.2s;\n }\n \n .ltc-calculator .ltc-input-tolerance:focus {\n border-color: #22c55e;\n }\n \n .ltc-calculator .ltc-input-tolerance-red {\n border-color: #fca5a5;\n }\n \n .ltc-calculator .ltc-input-tolerance-red:focus {\n border-color: #ef4444;\n }\n \n .ltc-calculator .ltc-result {\n margin-top: 16px;\n padding: 12px;\n background-color: #ffffff;\n border-radius: 8px;\n border: 1px solid #d1d5db;\n }\n \n .ltc-calculator .ltc-result-label {\n font-size: 0.875rem;\n color: #4b5563;\n margin-bottom: 4px;\n }\n \n .ltc-calculator .ltc-result-value {\n font-family: 'Roboto Mono', monospace;\n font-size: 1.125rem;\n color: #1f2937;\n font-weight: 500;\n }\n <\/style>\n<\/head>\n<body>\n \n <div class=\"ltc-calculator\">\n <h2 class=\"ltc-title\">Calculator<\/h2>\n \n <div class=\"ltc-container\">\n \n <div class=\"ltc-section\">\n <h3 class=\"ltc-section-header\">\n <span class=\"ltc-badge-mm\">MM<\/span>\n Millimeters\n <\/h3>\n \n \n <div class=\"ltc-field-group\">\n <label class=\"ltc-label\">Base Dimension<\/label>\n <input type=\"number\" id=\"ltc-mm-base\" step=\"any\" placeholder=\"0.000\" class=\"ltc-input-base\">\n <\/div>\n \n \n <div class=\"ltc-tolerance-grid\">\n <div>\n <label class=\"ltc-label ltc-label-green\">Upper Limit (+)<\/label>\n <div class=\"ltc-input-wrapper\">\n <span class=\"ltc-input-prefix ltc-input-prefix-green\">+<\/span>\n <input type=\"number\" id=\"ltc-mm-upper\" step=\"any\" placeholder=\"0.00\" class=\"ltc-input-tolerance\">\n <\/div>\n <\/div>\n <div>\n <label class=\"ltc-label ltc-label-red\">Lower Limit (-)<\/label>\n <div class=\"ltc-input-wrapper\">\n <span class=\"ltc-input-prefix ltc-input-prefix-red\">–<\/span>\n <input type=\"number\" id=\"ltc-mm-lower\" step=\"any\" placeholder=\"0.00\" class=\"ltc-input-tolerance ltc-input-tolerance-red\">\n <\/div>\n <\/div>\n <\/div>\n \n \n <div class=\"ltc-result\">\n <div class=\"ltc-result-label\">Dimension Range:<\/div>\n <div id=\"ltc-mm-range\" class=\"ltc-result-value\">\u2014 mm<\/div>\n <\/div>\n <\/div>\n\n \n <div class=\"ltc-section\">\n <h3 class=\"ltc-section-header\">\n <span class=\"ltc-badge-in\">IN<\/span>\n Inches\n <\/h3>\n \n \n <div class=\"ltc-field-group\">\n <label class=\"ltc-label\">Base Dimension<\/label>\n <input type=\"number\" id=\"ltc-inch-base\" step=\"any\" placeholder=\"0.0000\" class=\"ltc-input-base\">\n <\/div>\n \n \n <div class=\"ltc-tolerance-grid\">\n <div>\n <label class=\"ltc-label ltc-label-green\">Upper Limit (+)<\/label>\n <div class=\"ltc-input-wrapper\">\n <span class=\"ltc-input-prefix ltc-input-prefix-green\">+<\/span>\n <input type=\"number\" id=\"ltc-inch-upper\" step=\"any\" placeholder=\"0.0000\" class=\"ltc-input-tolerance\">\n <\/div>\n <\/div>\n <div>\n <label class=\"ltc-label ltc-label-red\">Lower Limit (-)<\/label>\n <div class=\"ltc-input-wrapper\">\n <span class=\"ltc-input-prefix ltc-input-prefix-red\">–<\/span>\n <input type=\"number\" id=\"ltc-inch-lower\" step=\"any\" placeholder=\"0.0000\" class=\"ltc-input-tolerance ltc-input-tolerance-red\">\n <\/div>\n <\/div>\n <\/div>\n \n \n <div class=\"ltc-result\">\n <div class=\"ltc-result-label\">Dimension Range:<\/div>\n <div id=\"ltc-inch-range\" class=\"ltc-result-value\">\u2014 inch<\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n\n <script>\n (function() {\n \/\/ Constants\n const MM_TO_INCH = 0.0393700787401575;\n const INCH_TO_MM = 25.4;\n const PRECISION = 3;\n\n \/\/ DOM Elements\n const elements = {\n mmBase: document.getElementById('ltc-mm-base'),\n mmUpper: document.getElementById('ltc-mm-upper'),\n mmLower: document.getElementById('ltc-mm-lower'),\n mmRange: document.getElementById('ltc-mm-range'),\n inchBase: document.getElementById('ltc-inch-base'),\n inchUpper: document.getElementById('ltc-inch-upper'),\n inchLower: document.getElementById('ltc-inch-lower'),\n inchRange: document.getElementById('ltc-inch-range')\n };\n\n \/\/ Track which side is being edited to prevent circular updates\n let isUpdating = false;\n\n \/\/ Format number with specified precision\n function formatNumber(value, precision) {\n if (value === null || value === undefined || isNaN(value)) return '';\n return Number(value).toFixed(precision);\n }\n\n \/\/ Convert mm to inches\n function mmToInch(mm) {\n if (mm === null || mm === undefined || mm === '' || isNaN(parseFloat(mm))) return null;\n return parseFloat(mm) * MM_TO_INCH;\n }\n\n \/\/ Convert inches to mm\n function inchToMm(inch) {\n if (inch === null || inch === undefined || inch === '' || isNaN(parseFloat(inch))) return null;\n return parseFloat(inch) * INCH_TO_MM;\n }\n\n \/\/ Update inch values from mm\n function updateInchFromMm() {\n if (isUpdating) return;\n isUpdating = true;\n\n const mmBase = parseFloat(elements.mmBase.value);\n const mmUpper = parseFloat(elements.mmUpper.value);\n const mmLower = parseFloat(elements.mmLower.value);\n\n \/\/ Convert base dimension\n if (!isNaN(mmBase)) {\n elements.inchBase.value = formatNumber(mmToInch(mmBase), PRECISION);\n } else {\n elements.inchBase.value = '';\n }\n\n \/\/ Convert upper tolerance\n if (!isNaN(mmUpper)) {\n elements.inchUpper.value = formatNumber(mmToInch(mmUpper), PRECISION);\n } else {\n elements.inchUpper.value = '';\n }\n\n \/\/ Convert lower tolerance\n if (!isNaN(mmLower)) {\n elements.inchLower.value = formatNumber(mmToInch(mmLower), PRECISION);\n } else {\n elements.inchLower.value = '';\n }\n\n updateDisplays();\n isUpdating = false;\n }\n\n \/\/ Update mm values from inch\n function updateMmFromInch() {\n if (isUpdating) return;\n isUpdating = true;\n\n const inchBase = parseFloat(elements.inchBase.value);\n const inchUpper = parseFloat(elements.inchUpper.value);\n const inchLower = parseFloat(elements.inchLower.value);\n\n \/\/ Convert base dimension\n if (!isNaN(inchBase)) {\n elements.mmBase.value = formatNumber(inchToMm(inchBase), PRECISION);\n } else {\n elements.mmBase.value = '';\n }\n\n \/\/ Convert upper tolerance\n if (!isNaN(inchUpper)) {\n elements.mmUpper.value = formatNumber(inchToMm(inchUpper), PRECISION);\n } else {\n elements.mmUpper.value = '';\n }\n\n \/\/ Convert lower tolerance\n if (!isNaN(inchLower)) {\n elements.mmLower.value = formatNumber(inchToMm(inchLower), PRECISION);\n } else {\n elements.mmLower.value = '';\n }\n\n updateDisplays();\n isUpdating = false;\n }\n\n \/\/ Update range displays\n function updateDisplays() {\n \/\/ MM Range\n const mmBase = parseFloat(elements.mmBase.value);\n const mmUpper = parseFloat(elements.mmUpper.value) || 0;\n const mmLower = parseFloat(elements.mmLower.value) || 0;\n\n if (!isNaN(mmBase)) {\n const mmMax = mmBase + mmUpper;\n const mmMin = mmBase - mmLower;\n elements.mmRange.textContent = formatNumber(mmMin, PRECISION) + ' ~ ' + formatNumber(mmMax, PRECISION) + ' mm';\n } else {\n elements.mmRange.textContent = '\u2014 mm';\n }\n\n \/\/ Inch Range\n const inchBase = parseFloat(elements.inchBase.value);\n const inchUpper = parseFloat(elements.inchUpper.value) || 0;\n const inchLower = parseFloat(elements.inchLower.value) || 0;\n\n if (!isNaN(inchBase)) {\n const inchMax = inchBase + inchUpper;\n const inchMin = inchBase - inchLower;\n elements.inchRange.textContent = formatNumber(inchMin, PRECISION) + ' ~ ' + formatNumber(inchMax, PRECISION) + ' inch';\n } else {\n elements.inchRange.textContent = '\u2014 inch';\n }\n }\n\n \/\/ Event Listeners for MM inputs\n elements.mmBase.addEventListener('input', updateInchFromMm);\n elements.mmUpper.addEventListener('input', updateInchFromMm);\n elements.mmLower.addEventListener('input', updateInchFromMm);\n\n \/\/ Event Listeners for Inch inputs\n elements.inchBase.addEventListener('input', updateMmFromInch);\n elements.inchUpper.addEventListener('input', updateMmFromInch);\n elements.inchLower.addEventListener('input', updateMmFromInch);\n\n \/\/ Initialize\n updateDisplays();\n })();\n <\/script>\n<\/body>\n<\/html>\n\n","protected":false},"excerpt":{"rendered":"<p>Length & Tolerance Converter is a practical engineering tool designed to accurately convert length units while calculating dimensional tolerances in manufacturing and fabrication processes. It…<\/p>","protected":false},"author":2,"featured_media":24245,"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":[8437,3398,8435,8436,8417],"class_list":["post-24243","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-unit-and-industry-standard-conversion","tag-dimensional-accuracy","tag-engineering-tools","tag-length-converter","tag-tolerance-calculator","tag-unit-conversion","pmpro-has-access"],"acf":[],"jetpack_featured_media_url":"https:\/\/www.mechstream.com\/wp-content\/uploads\/2026\/02\/Length-Tolerance-Converter.png","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/posts\/24243","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/comments?post=24243"}],"version-history":[{"count":0,"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/posts\/24243\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/media\/24245"}],"wp:attachment":[{"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/media?parent=24243"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/categories?post=24243"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/tags?post=24243"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}