Work out machining time instantly with clear inputs, formula shown and shareable results.
Cutting time is travel divided by feed rate, repeated for each pass. Travel is more than the part length: the tool must approach the work and clear it at the end, and on short cuts that allowance can dominate the cycle, which is why nibbling many shallow passes is often slower than one heavier cut.
Machining time
T = (length + approach) x passes / feed rate
T = (length + approach) x passes / feed rate. Cutting time is travel divided by feed rate, repeated for each pass.
No. It is cutting time only. Full cycle time adds rapid moves, tool changes and part handling, which frequently exceed the time spent actually cutting.
This calculator takes 4 inputs: Length of cut, Feed rate, Number of passes, Approach and overtravel per pass. The pre-filled defaults are a realistic worked example — replace them with your own site or project figures.