Betting Calculators
Check value, convert odds and plan your stakes before you bet. Free, no sign-up.
Value Bet Calculator
Enter the bookmaker odds and your own estimate of the chance a bet wins. The calculator shows whether the bet has value, your edge and the expected value of your stake.
Open calculatorOdds Converter
Type odds in any format — decimal, fractional or American — and instantly see the other formats and the implied probability.
Open calculatorAccumulator Calculator
Add the odds of each selection and your stake to see the combined odds of your accumulator, the potential return and how likely it is that every leg wins.
Open calculatorBookmaker Margin Calculator
Enter the home, draw and away odds for a match to see the bookmaker margin (overround) and what the fair odds would be without it.
Open calculatorStake & Bankroll Calculator
Enter your bankroll and the percentage you stake per bet to see your stake, how many bets your bankroll covers and how many losses in a row it takes to halve it.
Open calculatorBet Calculator
Enter the odds of each selection, mark it won, void or lost and add your stake. The bet calculator works out the return and profit on singles and accumulators, including each way bets.
Open calculatorLay Bet Calculator
Enter your bookmaker bet, the exchange lay odds and the commission. The calculator shows how much to lay, your liability and the result whichever side wins.
Open calculatorEach Way Calculator
Enter your stake per part, the odds and the place terms, then choose how the bet finished to see what each part of your each way bet returns.
Open calculatorParlay Calculator
Add the American odds of each leg and your stake to see the parlay odds, the payout if every leg hits and the implied chance of it happening.
Open calculatorThese calculators are for information and entertainment only. They don't predict results or guarantee profit. PredictoBets Community is not a bookmaker or casino. 18+ only. Read our disclaimer.