VALICALC · TECHNICAL REFERENCE

Gear Module Chart

Browse an authored list of common gear-module examples. Derived pitch columns help compare sizes; the list is not a reproduction of a complete preferred-series standard.

SCENARIO MATRIX

Search within the verified subset. Numeric sizes match complete designations; a nearby size is a candidate, not an exact match.

SELECTED REFERENCE

Module 2

Module
2 mm
Diametral pitch
12.7 1/in
Circular pitch
6.283 mm
All fields & cell provenance
Example pitch diameter
40 mm

v1.1.0 · verified 2026-10-06 · values use the valid conditions shown above

Continue your workflow

Gear Module Calculator →Gear Pitch Diameter Calculator →

Module 22 mmBack to answer ↑

Explore the verified data

13 matching rows · 13 in this subset

Gear Module Chart, metric display
Module exampleModuleDiametral pitchCircular pitchActions
Module 0.50.5 mm50.8 1/in1.571 mm
Module 0.80.8 mm31.75 1/in2.513 mm
Module 11 mm25.4 1/in3.142 mm
Module 1.251.25 mm20.32 1/in3.927 mm
Module 1.51.5 mm16.933 1/in4.712 mm
Module 22 mm12.7 1/in6.283 mm
Module 2.52.5 mm10.16 1/in7.854 mm
Module 33 mm8.467 1/in9.425 mm
Module 44 mm6.35 1/in12.566 mm
Module 55 mm5.08 1/in15.708 mm
Module 66 mm4.233 1/in18.85 mm
Module 88 mm3.175 1/in25.133 mm
Module 1010 mm2.54 1/in31.416 mm

Module 0.5

Module
0.5 mm
Diametral pitch
50.8 1/in
Circular pitch
1.571 mm
More dimensions
Example pitch diameter
10 mm

Module 0.8

Module
0.8 mm
Diametral pitch
31.75 1/in
Circular pitch
2.513 mm
More dimensions
Example pitch diameter
16 mm

Module 1

Module
1 mm
Diametral pitch
25.4 1/in
Circular pitch
3.142 mm
More dimensions
Example pitch diameter
20 mm

Module 1.25

Module
1.25 mm
Diametral pitch
20.32 1/in
Circular pitch
3.927 mm
More dimensions
Example pitch diameter
25 mm

Module 1.5

Module
1.5 mm
Diametral pitch
16.933 1/in
Circular pitch
4.712 mm
More dimensions
Example pitch diameter
30 mm

Module 2

Module
2 mm
Diametral pitch
12.7 1/in
Circular pitch
6.283 mm
More dimensions
Example pitch diameter
40 mm

Module 2.5

Module
2.5 mm
Diametral pitch
10.16 1/in
Circular pitch
7.854 mm
More dimensions
Example pitch diameter
50 mm

Module 3

Module
3 mm
Diametral pitch
8.467 1/in
Circular pitch
9.425 mm
More dimensions
Example pitch diameter
60 mm

Module 4

Module
4 mm
Diametral pitch
6.35 1/in
Circular pitch
12.566 mm
More dimensions
Example pitch diameter
80 mm

Module 5

Module
5 mm
Diametral pitch
5.08 1/in
Circular pitch
15.708 mm
More dimensions
Example pitch diameter
100 mm

Module 6

Module
6 mm
Diametral pitch
4.233 1/in
Circular pitch
18.85 mm
More dimensions
Example pitch diameter
120 mm

Module 8

Module
8 mm
Diametral pitch
3.175 1/in
Circular pitch
25.133 mm
More dimensions
Example pitch diameter
160 mm

Module 10

Module
10 mm
Diametral pitch
2.54 1/in
Circular pitch
31.416 mm
More dimensions
Example pitch diameter
200 mm

How to use this data

Circular pitch p=πm; DP=25.4/m. At your example tooth count z, pitch diameter d=mz.

  • Module and DP are designation units; physical dimensions can display in metric or imperial.

CHECK THE METHOD

Worked example

Module 2 has circular pitch 6.283185 mm, DP12.7 and 40 mm pitch diameter at 20 teeth.

Related calculators

CalculatorGear Module CalculatorCalculatorGear Pitch Diameter CalculatorCalculatorGear Circular Pitch CalculatorCalculatorGear Center Distance Calculator

Continue the reference workflow

ReferenceModule ↔ Diametral Pitch ChartReferenceSpur Gear Dimensions ReferenceReferenceKey & Keyway Size Chart

Common lookup questions

Is this the complete preferred module series?

No. It is an authored comparison list of common examples; check the gear supplier's actual product series.

TRACEABLE DATA

Sources, scope & verification

Dataset v1.1.0
Last verified:

13 authored common-module examples; generated pitch columns. This is not a complete ISO preferred-series table.

Values are curated product facts or generated scenarios. Paid standards, complete catalogs and source diagrams are not reproduced. A verification date applies to this documented subset.

KHK calculation of gear dimensions ↗

Type A · KHK · web revision not stated

Original equations and generated scenario values; no copied reference table.

Full provenance & artifact record
Source checked
2026-10-06
Use basis
authored-formula
Artifact SHA-256
55d5b5f18fe2559fc17ca1c1241b804602fd4eddd81a73dfe1b96b4c14d13ecf