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Calcimator

Material Removal Rate Calculator

Calculate cubic inches per minute from depth of cut, width of cut, and feed rate. Estimate required spindle horsepower.

Inputs

in
in
IPM

Results

Material Removal Rate

4.5 in³/min

MRR (metric)73.74 cm³/min
HP Required (Aluminum)1.13 HP
HP Required (Steel)4.5 HP
HP Required (Stainless)6.3 HP
Required Hp Aluminum1.41
Weight Per Min Aluminum0.44
How to Use This Calculator
  1. Enter axial depth of cut (DOC) and radial width of cut (WOC) in inches or mm.
  2. Set the feed rate (IPM or mm/min) from your machining parameters.
  3. Review material removal rate (MRR) in in³/min and cm³/min.
  4. Check required horsepower for aluminum, steel, and stainless to verify spindle power is sufficient.
  5. Reduce DOC or feed rate if required HP exceeds your machine's rated spindle power.

How the result changes with Axial Depth of Cut

Axial Depth of CutMaterial Removal Rate
0.315.49 in³/min
1.0518.9 in³/min
1.9535.1 in³/min
2.748.6 in³/min

What each input means

Axial Depth of Cut
Depth of cut along the tool axis (Ap).
Radial Width of Cut
Width of cut perpendicular to feed direction (Ae).
Feed Rate
Table feed rate in inches per minute.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    Axial Depth of Cut = 0.25, Radial Width of Cut = 0.25, Feed Rate = 72 = 3 input(s) provided
  2. Calculate Material Removal Rate
    Material Removal Rate
    4.5 = 4.5
  3. Calculate MRR
    MRR
    73.74 = 73.74
  4. Calculate HP Required
    HP Required
    1.13 = 1.13

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