Free betting calculators

Eleven calculators bettors use most, free and without signing up. Type odds in any format — decimal, fractional, American — or as a Polymarket price, which most calculators don't accept.

• 01Arbitrage calculatorSplit your stake across bets so every outcome pays the same — profit if under 100%.
• 02Bet calculatorHow much a bet pays back, and your profit.
• 03Parlay / accumulator calculatorPayout when several picks are combined into one bet.
• 04Odds converterDecimal, fractional, American, Polymarket price and chance.
• 05Implied probability calculatorThe chance the odds imply — and the odds a chance implies.
• 06Hedge calculatorBet the other side to lock in a profit or cut a loss.
• 07Each-way calculatorWin and place returns for each-way bets (racing, golf).
• 08Matched betting calculatorBack at a bookmaker, lay at an exchange — for qualifying and free bets.
• 09No-vig fair odds calculatorRemove the bookmaker’s margin to see fair odds and chances.
• 10Expected value (EV) calculatorIs a bet worth it in the long run?
• 11Dutching calculatorBack several selections so any of them winning pays the same.

For information only. Calculators do the arithmetic; they don't know whether a bet will win. Vridhhi never places bets, and gambling may be restricted where you live — check your local law. 18+.