Chip Load by Thread Pitch Calculator
For tapping, thread pitch locks the feed per revolution. Use the tapping feed calculator when the work is about feed by thread pitch rather than milling feed per tooth.
chip load calculator by thread pitch thread pitch feed rate calculator tapping feed rate calculator rpm pitch
Pitch-locked feed
feed per rev = thread pitch
Tapping feed rate
Vf = RPM * pitch
Milling contrast
Milling chip load is feed per tooth: fz = Vf / (flutes * RPM). Tapping feed is feed per revolution and equals the thread pitch.
Frequently asked questions
Is thread pitch the same as chip load?
For tapping, the feed per revolution equals the thread pitch. For milling, chip load is feed per tooth, so flute count also matters.
How do I use TPI?
Convert threads per inch to pitch first: pitch = 25.4 / TPI, then multiply by RPM for feed rate.
Related pages
- Tapping feed rate calculator - live RPM and thread-pitch feed calculator.
- Chip load calculator - milling feed per tooth and feed-rate calculator.
- Tap drill size calculator - tap-hole diameter and thread engagement.
- Thread pitch chart - metric and Unified thread pitch reference.