Machining Formulas
Surface Feet per Minute
SFM = 0.262 * Diameter * RPM
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Fill in 2 values and click "Calculate"
Diameter (inches)
RPM
SFM
Inches per Minute
IPM = Chipload per Tooth * Number of Teeth * RPM
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Fill in 3 values and click "Calculate"
Chipload per Tooth
Number of Teeth
RPM
IPM
Revolutions Per Minute
RPM = (3.82 * SFM) / Diameter
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Fill in 2 values and click "Calculate"
SFM
Diameter (inches)
RPM
Chipload per Tooth
CPT = IPM(Number of Teeth * RPM)
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Fill in 3 values and click "Calculate"
IPM
Number of Teeth
RPM
CPT
Feed per Revolution
FPR = IPM / RPM
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Fill in 2 values and click "Calculate"
IPM
RPM
FPR
Metal Removal Rate
MRR = Width of Cut * Depth of Cut * IPM
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Fill in 3 values and click "Calculate"
Width of Cut
Depth of Cut
IPM
MRR
Additional Formulas:
