Unbounds — exact, arbitrary-precision arithmetic

unbounds_

exact integer & arbitrary-precision decimal arithmetic, in your browser

decimal digits

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Type an expression and press Enter.

History

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About

Unbounds is a small calculator for arithmetic that ordinary calculators round off. Integers are exact with no upper bound — 2^4096 or 1000! return every digit. Decimals are computed to a precision you set, so 1/7 or sqrt(2) can run to hundreds of places.

Everything runs locally as JavaScript in your browser. There is no server-side computation, no account, no cookies, and no analytics or tracking. The page makes no network requests after it loads, and works offline once cached.

Integer arithmetic uses native BigInt; decimals use decimal.js. Primality above ~3.3×10²⁴ is reported as a Miller–Rabin probable prime rather than a proof.