Machining Speeds and Feeds Calculator

Engineering Calculators

Equations and Explanation Behind this Calculator

This calculator will determine speeds and feed rates for machining operations on mill or lathes.

Cutting speeds are usually given in feet or meters per minute and these speeds must be converted to spindle speeds, in revolutions per minute, to operate the machine.

After changing variables Click in this area space or "Recalculate" to see results.

Calculate Spindle Speed Variables
Units metric inches
Cutting Speed V (m/min or fpm)
Diameter D (mm or inches)
Results
Spindle Speed rpm (m/min or rpm)
 
Calculate Cutting Speed Variables
Units metric inches
Spindle Speed rpm (m/min or rpm)
Diameter D (mm or inches)
Results
Cutting Speed V (m/min or fpm)

Automatic recalculation 

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