🧮

Free calculators for lathe operators

The calculations you actually reach for on the shop floor, straight in the browser. No sign-up, works on a phone.
The maths is the same engine that drives LATHE-NC.

📐

Tool nose radius compensation

Programmed X/Z coordinates and the offset for chamfers, tapers and corner radii. Stop working out "0.47 for an R0.8" on a calculator every time.

Open the calculator →
⏱️

Surface speed and RPM

RPM, feed rate and cycle time from cutting speed and diameter, with starting speeds by material. Japanese interface for now.

Open the calculator →
📏

Taper calculator

Taper angle and ratio from the large and small diameters and the length, plus the diameter at any position. Japanese interface for now.

Open the calculator →

Want a calculator that is not here? Tell me on X (@lathe_nc_works).

LATHE-NC does all of this for you.

Load a DXF and get G-code with nose radius compensation already applied, plus the simulation.
A CAM built only for turning, running in the browser. The beta is free.

See LATHE-NC

Or skip the calculation altogether.

With LATHE-NC you pick the tool and the G-code comes out with nose radius compensation included.
No install, no sign-up. The beta is free.