Each calculator answers one question. Pick by what you're trying to do:
- Odds converter — turn American ↔ decimal ↔ implied probability. The starting point for everything else.
- Hedge (back/lay) — you've placed a bet at one book; how much do you cover on the other side to lock a result?
- Dutching — spread stakes across every outcome (at different books) so you get the same return whoever wins.
- EV — is a price actually +EV versus the fair odds?
Free and public
All four live under /calculators and work without an account. Inside Bonus Edge they also open pre-filled from the Oddsmatcher and Converter, so you rarely type numbers by hand.