// multi-utility computation suite · offline · instant · precise
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eng.cnc-cutting-speed Calculator
Calculates CNC cutting speed, spindle RPM, feed rate, and material removal rate from cutter diameter, material, and cutting parameters. Cutting speed is the primary driver of tool life — doubling cutting speed reduces tool life by 3–10× depending on the Taylor exponent for the material.
Inputs
Spindle Speed Rpm
Rate of movement. 1 m/s = 3.6 km/h = 2.237 mph.
Tool Diameter Mm
Distance across a circle through its centre. Always confirm units match the rest of the calculation.
Feed Per Tooth Mm
Reference formula or conversion factor shown for context.
Number Of Flutes
Count of items or occurrences.
Results
cutting speed Vc (m/min)
The computed rate of movement or processing.
table feed rate Vf (mm/min)
The value at the specified point or condition.
material removal rate MRR (mm³/min)
MRR (monthly recurring revenue) -- total predictable monthly subscription income. MRR x 12 = ARR.
Vc = πDN/1000
Sample size or count used in the calculation.
Vf = fz × z × N
Sample size or count used in the calculation.
HSS typical Vc
Reference formula or conversion factor shown for context.