Calculate spindle speed (RPM) and feed rate for machining operations.
Input Parameters
Calculation Results
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About this calculator
Quick Reference
RPMSpindle speed
FeedRPM * Flutes * Feed/Tooth
Vc / SFMSurface speed of the tool
DTool diameter
Overview
Speeds and Feeds refers to the spindle speed (RPM) and the feed rate (how fast the tool moves through the material). Correct settings ensure tool longevity and part quality.
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Pro Tips
RPM stands for Revolutions Per Minute.
Feed rate is the product of RPM, number of flutes, and feed per tooth.
Aluminum usually allows much higher cutting speeds than Stainless Steel.
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Fun Facts
"In modern high-speed machining, RPMs can exceed 20,000 for small tools."
"Coolant is often required to prevent the 'chip' from welding back onto the tool."
"The term 'chip load' is another way to say feed per tooth."
