Feed Rate Calculator (IPM)

CORE CNC

Calculate table feed rate in inches per minute from spindle RPM, chip load per tooth, and flute count.

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Feed Rate (IPM)
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Feed Rate (mm/min)

Formula: IPM = RPM times Chip Load times Number of Flutes.

How it works

Feed rate is how fast the tool travels through the material, set so each tooth removes a consistent chip load. Multiply RPM by chip load and flute count to get the table feed.

FAQ

What chip load should I use? Check the tool manufacturer chart; it varies by tool diameter, material, and flute count.

Related Guides

CNC Calculators · Chip Load Calculator · SFM Calculator

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The calculators and tools on Formula Factory are provided for general guidance and informational purposes only. Results are estimates based on standard formulas and the values you enter — they do not constitute professional engineering, electrical, or architectural advice. Always verify calculations with a qualified professional before making decisions for any safety-critical, code-compliance, or commercial application. Formula Factory makes no representations or warranties as to the accuracy or completeness of any result, and accepts no liability for errors, omissions, or any outcomes arising from reliance on this information.