MILLING CALCULATOR

Calculate common milling parameters in metric or imperial units. Enter values in the white fields; results update automatically.

Unit System: Metric Imperial

Cutting Speed

Vc = π × D × n ÷ 1000

Spindle Speed n [RPM]Cutter Diameter D [mm]

Cutting Speed

0 m/min

Spindle Speed

n = Vc × 1000 ÷ (π × D)

Cutting Speed Vc [m/min]Cutter Diameter D [mm]

Spindle Speed

0 RPM

Table Feed

Vf = fz × z × n

Feed per Tooth fz [mm/tooth]Effective Teeth zSpindle Speed n [RPM]

Table Feed

0 mm/min

Feed per Tooth

fz = Vf ÷ (z × n)

Table Feed Vf [mm/min]Effective Teeth zSpindle Speed n [RPM]

Feed per Tooth

0 mm/tooth

Material Removal Rate (MRR)

Q = ae × ap × Vf ÷ 1000

Radial Width of Cut ae [mm]Axial Depth of Cut ap [mm]Table Feed Vf [mm/min]

Material Removal Rate

0 cm³/min

Machining Time

Tc = L ÷ Vf

Machining Length L [mm]Table Feed Vf [mm/min]

Machining Time

0 min

Engineering note: These are mathematical reference calculations, not recommended cutting data. Actual speeds, feeds, chip thickness and tool performance depend on workpiece material, cutter type, cutting-tool material/grade, entering angle, effective teeth in cut, radial/axial engagement, machine rigidity, holder and coolant. For ball-nose, round-insert or other cutters whose effective cutting diameter differs from nominal diameter, use the effective diameter at the actual depth of cut when appropriate.