United States calculator
Calculate synchronized tapping feed and cycle time
Calculate rigid or synchronized tapping feed rate, feed per revolution and approximate in-cut time from spindle RPM, thread pitch and tapping depth using U.S. or metric inputs.
RPM • TPI or metric pitch • depth
Calculator inputs
Tapping Feed Rate Calculator results
How this Tapping Feed Rate Calculator works
For inch threads, feed in inches per minute equals RPM divided by threads per inch. For metric threads, feed in millimeters per minute equals RPM multiplied by pitch in millimeters.
Important: Program requirements differ for rigid tapping, tapping heads, reversing cycles, acceleration and machine controls. Verify the machine and tooling instructions.
What assumptions should I verify?
Verify every entered quantity, rate, unit, product specification and local requirement before relying on the estimate. U.S. conventions are primary where location matters.
Is information sent anywhere?
No. Calculations run locally in the browser and this calculator sends no entered information to a remote service.