CNC & Manufacturing Calculators
Machining calculators for milling and turning: speeds and feeds, cycle-time quoting and removal rates. Starting values only — always verify against the tool manufacturer's cutting data.
Speeds & Feeds
Spindle RPM from cutting speed and table feed from chip load.
- Cutting Speed to RPM CalculatorConvert cutting speed (Vc, m/min or SFM) and tool diameter to spindle RPM for milling and turning, with typical carbide starting values.
- Feed Rate CalculatorCalculate table feed from spindle RPM, chip load per tooth and flute count — with the rub-versus-chip warning and typical fz starting values.
Production
Cycle time, material removal rate and shift production planning.
- Machining Time CalculatorCalculate machining cycle time from cut length, feed and passes — with setup amortization and parts-per-hour for quoting.
- Material Removal Rate CalculatorCalculate material removal rate for milling (ae × ap × vf) or turning (Vc × ap × fn) — with the spindle-power implication for steel and aluminum.
- Production Rate CalculatorCalculate parts per shift from cycle time and machine availability — with theoretical-vs-available output and true utilization percentage.