Estimate machining cutting time from cutting length and feed rate, or calculate feed rate from RPM, feed per revolution and feed per tooth. Add non-cutting time to estimate production time.
How do I calculate machining time? Divide cutting length by linear feed rate. If feed rate is not directly known, calculate it from RPM and feed per revolution or feed per tooth.
How do I calculate turning time? Calculate feed rate as RPM × feed per revolution, then divide cutting length by that feed rate.
How do I calculate milling time? Calculate table feed as RPM × number of cutter teeth × feed per tooth, then divide cutting length by table feed.
How is drilling time calculated? For a simplified estimate, calculate feed rate as RPM × feed per revolution and divide drilling distance by the resulting feed rate.
Does machining time include tool changes? Basic cutting time does not. The calculator lets you add an estimated non-cutting allowance.
Can I calculate multiple-pass machining time? Yes. Enter the number of cutting passes and the calculated cutting time is multiplied accordingly.
Is this an exact CNC cycle-time calculator? No. It is a planning estimate. Actual CNC cycle time depends on machine motion, acceleration, rapid rates, tool changes, programming and setup.
What units can I use? The calculator accepts metric and imperial length, feed and diameter-related inputs where applicable, then normalizes them internally.