Involute Gear Calculator
The following online calculator computes
the basic dimensions and tooth profile
of an involute gear based on its module,
number of teeth and pressure angle (the latter is usually 20°).
A gear wheel can be fully defined with as few as two parameters: the number of teeth (z) and module (m).
The latter is simply the reference diameter divided by the number of teeth.
Changing the other two parameters (α and x) is not recommended.
Related: How to Model Involute Gears in Blender