ONLINE TURNING CALCULATOR / FEED
Turning feed-rate converter
Multiply feed per revolution by spindle RPM to convert to feed per minute. Select metric or imperial units and enter the RPM you need to review.
Formula and limits
Feed per minute = feed per revolution × spindle RPM. Units follow the inputs: mm/rev × rev/min = mm/min, or in/rev × rev/min = in/min.
Distinguish the control’s feed-per-revolution and feed-per-minute modes. In constant-surface-speed mode, RPM can change with diameter, so use the actual speed at the position/time being reviewed. Select feed using tool-maker recommendations, material, depth of cut, machine, and process requirements.
This tool performs arithmetic only. It does not generate a program or assess machine capability. Verify feed codes, units, and modal behavior in the manual for the exact controller. See the G96/G97 guide.