About CNC TrueCut

CNC TrueCut brings practical machining arithmetic and clear explanations together. The site is built around free tools for speeds and feeds, geometry, hole patterns, thread lead and dimensional checks, with Imperial and Metric unit support.

Every calculator has an explanation, a formula and a worked example. Inputs are checked before results are shown. We keep the calculation accessible so you can understand the relationship behind a number rather than treating it as an unexplained recommendation.

Our calculators are independently implemented. Reference pages link to manufacturer data or a governing standard when a complete controlled table is needed. The site does not claim that a general formula chooses a tool grade, certifies a drawing or substitutes for a machine manual.

Relevant tooling and insert brands can discuss advertising. Paid placements will be disclosed and kept separate from calculator inputs and results.

Send a page link, units, inputs and expected result to admin@cnctruecut.com if you spot a problem. Explore the toolbox or start with our speeds-and-feeds guide.