Tapping Speed Calculator
Calculate tapping spindle speed from cutting speed and nominal tap diameter.
A QUICK WALKTHROUGH
How to use this tool
- Enter the parameters and units listed below.
- Review the formula and scope limits.
- Calculate locally in this browser.
Formula and scope
RPM = cutting speed × 1000 ÷ (π × diameter), with cutting speed in m/min and diameter in mm. Does not select a safe material-specific speed. This is an arithmetic aid only; verify inputs and assumptions independently.
Privacy
Inputs are processed locally and are not uploaded or stored.
GOOD TO KNOW
Common questions
Does this select design or operating parameters?
No. It calculates only from values you provide and is not a safety or process recommendation.