Contact
Found a bug in the math? Want a calculator we don't have yet? Something confusing? We read everything.
Write to [email protected] and we'll get back to you as soon as we can.
Especially useful to us
- Calculator requests — tell us the exact question you were trying to answer; we build from real needs.
- Corrections — if a formula or explanation looks wrong, say which page and what you expected. Math errors get fixed fast.
- Confusion reports — if a result didn't make sense, that's a design bug even when the math is right.
For privacy questions, see our privacy policy.