CNC Machining

Spindle speed, feed rate, cycle time, tool life, MRR, and shop rate calculators for machinists and job shops.

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Calculate per-hour machine cost from depreciation, maintenance, tooling, electricity, labor, and overhead for job shop quoting.

Determine workholding size range for collet and jaw chuck types. Check if your part diameter fits within the clamping range.

Convert refractometer readings to coolant concentration percentage and calculate adjustments to reach target concentration.

Calculate total part cycle time from cutting paths, rapid moves, tool changes, and load/unload times.

Calculate feed rate (IPM) from chip load, number of flutes, and spindle RPM for CNC milling operations.

Calculate cubic inches per minute from depth of cut, width of cut, and feed rate. Estimate required spindle horsepower.

Calculate RPM from cutting speed (SFM) and tool diameter for milling, turning, and drilling operations.

Calculate expected surface roughness (Ra) from feed rate and tool nose radius for turning and milling operations.

Calculate helical interpolation feeds, speeds, and thread geometry for CNC thread milling operations.

Calculate expected tool life using the Taylor tool life equation from cutting speed, reference data, and the Taylor exponent.