Screw Pitch (TPI)
Calculate Screw Pitch (TPI) instantly with the exact formula and a worked example. Free online calculator — no signup.
Screw Pitch (TPI)
Threads per inch (TPI)
Step
1.27mm
TPI
20
Pitch, mm
1,27
Pitch, in
0,05
More about: Screw Pitch (TPI)
What it calculates
The “Screw Pitch (TPI)” calculator computes Step in mm from 1 parameter: threads per inch (tpi).
A converter between units of measure, currencies, and sizes.
Example calculation
With parameters Threads per inch (TPI) = 20 the result is 1.27 mm.
How to use
- Enter the parameter values — every field above is adjustable with a slider.
- The result and related metrics are calculated automatically as you type.
- Use the additional metrics shown (if any) where needed.
- Copy the result or bookmark the page.