Enter odds from two or more sportsbooks to find guaranteed profit opportunities. An arbitrage exists when the combined implied probability is below 100%.
Odds Lines
American
American
Results
Enter valid American odds for all outcomes to see results.
Arbitrage (arb) betting exploits odds differences between sportsbooks. When the combined implied probability across all outcomes is below 100%, you can stake each side proportionally and lock in a guaranteed profit regardless of the result.
How do I read American odds?
Negative odds (e.g. -150) show how much you must bet to win $100. Positive odds (e.g. +130) show how much you win on a $100 bet. The calculator converts these to implied probabilities automatically.
How much profit can arbs make?
Typical sports arbs range from 1-5% per opportunity. While margins are thin, they are risk-free when executed correctly across two or more books simultaneously.