Machining Calculators
Quickly calculate common cutting speed, feed, tapping and power/torque parameters. Results are theoretical approximations.
These calculations are theoretical approximations and vary with tool wear, material batch and machine rigidity. Verify with the tool manufacturer's catalog data for critical applications.
Cutting Speed / RPM
Calculates spindle speed (RPM) from diameter and cutting speed (Vc).
Feed Rate (Vf)
Calculates table feed from feed per tooth, flute count and RPM.
Material Removal Rate (MRR)
Calculates removed material volume per minute from depth, width and feed.
Tap Drill Diameter
Calculates the required tap drill diameter from thread diameter and pitch.
Tapping Torque
Estimates tapping torque and power from thread geometry, tapping speed and material.
Spindle Speed n (RPM): 255 RPM
Cutting Power / Torque
Calculates spindle power and torque requirement from cutting parameters and material.
Surface Roughness (Ra)
Estimates theoretical surface roughness in turning from feed and nose radius.
Machining Time
Calculates approximate machining time from cut length, feed rate and number of passes.
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