Use this live calculator to estimate common turning and milling parameters directly in your browser. Enter your machining values below and the results will update instantly for quick reference.
Engineering Resource
Calculate Turning and Milling Parameters Instantly
Enter machining values to see live results for common turning and milling formulas. Each calculator updates automatically as you type.
Turning Calculator
Enter turning values to calculate cutting speed, feed rate, cutting time, and theoretical roughness instantly.
Cutting Speed (Vc)
Vc = π × d × n / 1000
- Vc: Cutting Speed
- d: Workpiece Diameter
- n: Spindle Speed
Feed Rate (Fr)
Fr = l / n
- Fr: Feed Rate
- l: Cutting Length/min
- n: Spindle Speed
Cutting Time (Te)
Te = lm / l
- Te: Cutting Time
- lm: Component Length
- l: Cutting Length/min
Theoretical Roughness (h)
h = (f² / (8 × Re)) × 1000
- h: Surface Roughness
- f: Feed Rate
- Re: Insert Nose Radius
Milling Calculator
Enter milling values to calculate cutting speed, feed per tooth, feed speed, and process time instantly.
Cutting Speed (Vc)
Vc = π × D1 × n / 1000
- Vc: Cutting Speed
- D1: Insert Diameter
- n: Spindle Speed
Feed per Tooth (Fz)
Fz = vf / (z × n)
- Fz: Feed per Tooth
- vf: Feed Speed/min
- z: Milling Blades No.
- n: Spindle Speed
Feed Speed (Vf)
Vf = fz × z × n
- Vf: Feed Speed
- fz: Feed per Tooth
- z: Milling Blades No.
- n: Spindle Speed
Process Time (Tc)
Tc = L / vf
- Tc: Process Time
- L: Workbench Feed Length
- vf: Feed Speed/min
Calculations are for reference only. Confirm final machining parameters with tool testing, machine limits, and your actual process conditions.