Calculators

Six shop-floor calculators that know your material — they suggest real cutting data, then warn you when a number will burn a tool or miss a finish. Every value stays editable.

Cutting data

MILL

Milling feeds & speeds

Material-aware RPM and table feed for end mills — with MRR, power and torque when you add engagement, plus chip-thinning and rubbing warnings.

RPMFeed rateMRR · Power · TorqueOpen calculator →TURN

Turning feeds & speeds

Rough or finish turning data from the material group — spindle speed, feed, power, and the theoretical Ra your insert's nose radius can actually deliver.

RPMFeedPower · RaOpen calculator →DRILL

Drilling speed & feed

RPM, feed and per-hole cutting time for twist drills — flags deep holes and tells you when to switch to a G83 peck cycle with a sensible Q value.

RPMFeed rateTime per holeOpen calculator →TAP

Tapping calculator

Pick a metric thread and material — synchronized tapping RPM, exact feed (n × pitch) and the correct tap drill diameter with engagement guidance.

RPMFeed rateTap drill ØOpen calculator →

Quality

Surface finish (Ra)

Theoretical Ra from feed and nose radius, mapped to ISO N classes — or work backwards from a target Ra to the maximum feed you can run.

Ra (µm)ISO N classMax feed for targetOpen calculator →

Shop economics

COST

Downtime cost

What a stopped machine really costs per breakdown: lost capacity, idle labor and scrap — the number that justifies spares on the shelf.

Total costCost per hourBreakdownOpen calculator →

Suggested values, not gospel. Cutting data comes from conservative catalog mid-ranges for each material group. Your tooling, fixturing and machine rigidity decide the final numbers — every field stays editable, and the calculator warns instead of blocking when you leave the typical range.