Mechanical & Civil Engineering
Turning Speed, Feed Rate & Metal Removal Rate Calculator
Calculate spindle RPM, feed rate, and metal removal rate for a lathe turning operation.
Your inputs
Change any value to update the result instantly.
Spindle speed
954.9 RPM
Feed rate
190.99 mm/min
Metal removal rate
60,000 mm³/min
Depth of cut
2 mm
What this calculator does
Turning Speed, Feed Rate & Metal Removal Rate Calculator: Applies the standard shop-floor or joint-design relationship so the force, speed, allowance or strength can be worked out from the process inputs.
What your result means
The headline figure is the process setting or joint strength implied by your inputs. Treat it as a starting point to validate against the tool maker's data and a trial part.
Formula and working
N = 1000 × Vc ÷ (π × D); MRR = Vc × f × d
- 1
Collect the inputs
Cutting speed (Vc) = 150 m/min; Workpiece diameter = 50 mm; Feed per revolution = 0.2 mm/rev; Depth of cut = 2 mm
- 2
Apply the formula
N = 1000 × Vc ÷ (π × D); MRR = Vc × f × d
- 3
Result
Spindle speed = 954.9 RPM
Frequently asked questions
Symbols and assumptions
- cuttingSpeed
- Cutting speed (Vc) (m/min)
- diameter
- Workpiece diameter (mm)
- feedPerRev
- Feed per revolution (mm/rev)
- depthOfCut
- Depth of cut (mm)
- • Nominal tooling, material and process conditions are assumed; machine, tool-wear and lubrication effects vary in practice.
- • Recommended cutting data always sits inside the tool maker's published envelope, which takes priority.
Sources and review
Reviewed 2026-09-22 · Next review 2027-09-22
- • This is an educational estimate for learning and checking, not a design deliverable.
- • Real design must follow the governing code or standard for your jurisdiction and be reviewed and signed off by a qualified engineer.
- • Safety factors, load combinations and material certification are the responsibility of the designer, not of this page.
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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