Free tools
Betting calculators
The maths behind surebets, odds and staking, one tool per question. No account, nothing saved, every formula shown.
- Surebet calculatorMargin, stake per book and payout for 2 or 3 outcomes.
- Odds converterDecimal, fractional, American and implied probability, both ways.
- No-vig fair odds calculatorTake the book's margin out of a market and see the fair odds.
- Asian handicap calculatorWhat a handicap bet returns for every final score, quarter lines included.
- Kelly criterion calculatorThe stake the Kelly formula gives for your odds, your estimate and your bankroll.
- Dutching calculatorBack several selections in one event for the same return on any of them.
- Hedge bet calculatorHow much to place on the other side to lock in a result or cover your stake.
New to this?
Learn starts at odds and probability and goes through surebets, stake splitting, the risks and the limits books put on winning accounts.
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