Free · Materials specifications calculators 🏗️

Machining Material Removal Rate

Calculate volumetric removal rates for turning, milling, grooving, drilling and grinding.

  • Formula & worked example
  • Private in your browser
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Calculator inputs

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How to use this calculator

  1. Enter the known values in the units shown. Results update as you type.
  2. Where results are editable, change one to solve backwards. Lock a value to hold it fixed.
  3. Use the worked example to check the method. Reset restores the starting fields.

Private by default

Inputs and results stay in this browser tab. Bookify does not upload or store the values you enter.

Formula and method

In initial display units, Depth of cut, axial (Dp) 2, Depth of cut, radial (Dr) 3, Feed velocity (Vf) 60 gives Material removal rate (MRR) 6.

Milling removal rate = axial depth×radial depth×feed velocity; drilling = diameter×feed per revolution×cutting speed/4.

Worked example

Enter these known values and leave the other values blank.

Operation
Milling
Depth of cut, axial (Dp)
2 mm
Depth of cut, radial (Dr)
3 mm
Feed velocity (Vf)
60 mm/min
Material removal rate (MRR)
6 mm³/s

Assumptions and limitations

  • Rates are ideal steady-cut geometry, not guaranteed machine capacity. Feed per revolution is distinct from table feed velocity. All dimensions and speeds must be positive; acceleration, tool wear and chip interruptions are excluded.
  • Select compatible units and clear the quantity to solve before supplying the remaining measurements. Rounded purchase counts cannot uniquely recover a continuous dimension. Currency choices label amounts and do not convert exchange rates.

Common questions

How can I solve for a missing measurement?

Clear that field, then enter independent known values. Lock a known measurement to preserve it while changing another value. Procurement counts are rounded upward and cannot be reversed uniquely.

References

The calculation equations, inverse formulas, units, and input rules were imported from this source. Bookify provides the interface and equation solver.

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