🔢 Math~4.4K searches/moFree · No signup
Modulo Calculator
Calculate a mod b — the remainder after division — with the floor quotient shown too.
How to use this tool
- 1Paste or type your input above.
- 2The result updates instantly.
- 3Copy the output with one click.
Frequently asked questions
What is modulo used for?+
Anything cyclical: clock arithmetic, determining odd/even, hashing, cryptography and scheduling (e.g. day-of-week math).
Is my data private?+
Yes. The tool runs entirely in your browser — nothing you paste or type is uploaded to a server.
Learn more
- Modulo Calculator: formula and example
- modulo calculator explained
- Common mistakes with modulo calculator