Disclosure

Transparency about links, funding, scope, and your data — per FTC guidance.

numlit is free. Some outbound links — for example to language references, books, IDEs or developer tools — may be affiliate links: if you sign up through them we may earn a commission at no extra cost to you. Paid links are marked rel="sponsored nofollow".

We only link to things we'd actually use, and a commission never changes what the tool reports. Every result follows the published methodology.

Scope. numlit models the common numeric-literal forms across C (C23), Rust, Go, Java, Python 3 and JavaScript. Integer values are exact (BigInt); floats use IEEE-754 binary64. Exotic forms are flagged, not fully modelled, and lexer corners are subtle — for anything unusual, confirm against the official language reference and your actual compiler. It is not legal, financial, or safety-critical advice.

Your privacy: this is a static, client-side tool. The literal you type is processed in your browser and is never uploaded — there is no backend and nothing is logged.