Chip Load Calculator
SI
Imp
Imperial
Inputs
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Solve for
Choose whether you know the chip load (and want the feed rate) or the feed rate (and want the chip load).
Solve feed rate (from chip load)
Solve chip load (from feed rate)
Spindle speed
(n)
Spindle / cutter speed in RPM.
rpm
Number of flutes
(Z)
Number of teeth (flutes) on the cutter.
flutes
Chip load
(fz)
Feed per tooth (chip load). 0.0254 mm ≈ 0.001".
mm
Feed rate
(Vf)
Table / linear feed rate of the cutter.
mm/min
Results
Default result
Edit inputs
Feed rate
(Vf)
254
mm/min
Also computed
Chip load
(fz)
0.0254
mm
Feed per tooth.
Feed per revolution
(f)
0.0508
mm
Method notes
4 notes
Feed rate Vf = chip load × flutes × RPM = fz · Z · n. Feed per revolution = fz · Z.
Given the chip load, the table feed rate is fz · Z · n.
Chip load is per tooth (per flute), not per revolution — a 2-flute cutter feeds twice the chip load per turn.
Use the tool maker’s recommended chip load for the cutter diameter and material; thin chips work-harden, thick chips overload the edge.
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