The Gear Center Distance Calculator is a practical engineering tool designed to quickly determine the center distance between two meshing gears. By entering essential gear parameters such as module, number of teeth, or pitch diameter, users can calculate the required spacing between gear centers accurately and efficiently. This calculator is useful for gear design, gearbox development, mechanical transmission systems, and machine component selection. The Gear Center Distance Calculator helps engineers, designers, students, and technicians reduce manual calculation errors, verify gear compatibility, and optimize gear layouts. Whether you are designing a new gear transmission or checking an existing mechanism, this tool provides a fast and convenient way to obtain reliable center distance results for efficient mechanical design.

Gear Center Distance Calculator

Gear Geometry

mm

Normal module of the gear pair

–

Must be a positive integer >= 1

–

Must be a positive integer >= 1

deg

0 deg for spur gears; > 0 deg for helical gears

Profile Shift & Pressure Angle

–

Addendum modification coefficient

–

Addendum modification coefficient

deg

Typically 20 deg (ISO / DIN standard)

Results

Standard Values

Center Distance a –mm
Transverse Module mt –mm
Pitch Diameter d1 –mm
Pitch Diameter d2 –mm
Transverse Pressure Angle αt –deg

Modified Values

Operating Center Distance aw –mm
Center Distance Shift Δa –mm
Working Pressure Angle αwt –deg