Arbitrage Calculator
An arbitrage exists when the combined implied probability of all outcomes across different books is under 100% - betting all outcomes in the right proportion locks in a profit regardless of the result.
Split stakes 49.4% / 50.6% across A / B to lock in an equal profit regardless of outcome.
How it works
Sum the implied probability of every outcome. If the total is under 100%, split your total stake across outcomes in proportion to each one's implied probability to lock in equal profit either way.
Worked example: Odds of 2.10 and 2.05 on the two sides of a market: 47.6% + 48.8% = 96.4% - under 100%, so a 3.6% risk-free margin exists.
FAQ
How often do real arbitrage opportunities appear?
Rarely, and briefly - bookmakers adjust prices quickly once volume shifts. They're most common right after a market opens or after late-breaking news.
What's the catch?
Stake limits, account restrictions on repeat arbitrage bettors, and odds moving before both bets are placed are the main practical risks.
Related tools
18+. These tools are analytical only - they do not accept bets, do not predict outcomes, and do not guarantee profit. Gamble responsibly. Sports betting regulations vary by jurisdiction; you are responsible for understanding and complying with the laws where you live.
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