Implied Probability
The calculator converts each decimal odd into an implied probability and adds both probabilities together.
L = (1 ÷ Odds A) + (1 ÷ Odds B)Enter the odds for both sides of your bet and specify your stake for one side. The calculator will determine the recommended amount to wager on the other side. Calculated margins are not guaranteed — odds can change between placements.
Arbitrage betting (also called "arbing" or "sure betting") compares opposite outcomes across sportsbooks when odds discrepancies exist. Enter odds from two different sportsbooks and your stake to see the calculated hedge amount; odds can move, bets can be limited or voided, and user error can occur.
Use decimal odds for two opposite outcomes from the same event.
For this calculation to work, Side A and Side B must cover all mutually exclusive outcomes being hedged. Review the market rules carefully before placing any bet.
The calculator converts each decimal odd into an implied probability and adds both probabilities together.
L = (1 ÷ Odds A) + (1 ÷ Odds B)If the combined implied probability is below 100%, the mathematical result indicates a candidate arbitrage at that moment.
L < 1.00 = candidate arbitrageThe hedge stake aims to match the payout on both sides, using the stake placed on Side A.
Stake B = Stake A × Odds A ÷ Odds BThe calculator compares matched payout with the total investment to estimate profit and margin.
Profit = Payout − Total InvestmentArbitrage calculations are for informational and entertainment purposes only. Odds can change between placements, operators may limit or void wagers, and market rules can differ. Never gamble with money you cannot afford to lose.
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