Free tools

Betting calculators

Plain arithmetic for the questions that come up before every bet. No account, no tracking, nothing stored.

• Odds converterDecimal, fractional and American odds, with the implied probability.
• Kelly stake calculatorHow much to stake when you think a price is wrong, and by how much.
• Dutching calculatorSpread a stake across outcomes so the return is the same whichever wins.
• Each-way calculatorReturns for win, place and unplaced at any place terms.