Licences and credits

Last checked 25/10/2026.

Third-party code

None. Every script on the site, including the calculators, the G-code generators and the G-code reader behind the viewer, is original code written for Lathe Calculator. No third-party libraries, frameworks or analytics scripts are loaded, and nothing is fetched from another site when you use a calculator.

If we ever add a library, it will be one under a permissive licence (such as MIT, BSD or Apache 2.0), served from this site, and its name, copyright line and licence text will be listed here.

Fonts and icons

Text uses the fonts already installed on your device. The icons and drawings are simple shapes drawn for this site.

Reference material

Figures come from public standards and published data, worked through in our own words, with sources named on each page. The G-code reference is our own wording. We read public pages such as the LinuxCNC documentation, the Grbl wiki and maker code lists for facts only and copied no text, tables or examples from them. No control maker’s manuals, images or logos are reproduced.

See also the trademarks page and the terms of use.