Surebet Calculator
Split your stake across multiple bookmakers and spot arbitrages that guarantee a profit.
Total amount you want to split across all bets.
Surebet detected: you lock in a profit no matter the outcome.
How it works
A surebet (also called an arbitrage bet) is a combination of wagers covering every possible outcome of a sporting event, using odds high enough across different bookmakers to guarantee a profit whatever the result. This calculator instantly tells you whether an arbitrage opportunity exists and gives you the optimal stake distribution across each bet to lock in identical returns on every outcome.
The principle is simple: if the sum of the implied probabilities (1/odds) across all outcomes is below 100 %, you have a surebet. For example, if bookmaker A offers 2.10 on a home win and bookmaker B offers 2.10 on the away win, the total implied probability is 95.24 %, leaving roughly 5 % of guaranteed profit for the bettor. Our tool automatically calculates that percentage and the exact stake to place on each odd so that the payout is balanced.
To exploit surebets in practice, you'll need accounts at multiple bookmakers, active monitoring of odds discrepancies and fast execution before bookmakers adjust their lines. A word of caution: operators often limit or close accounts of identified arbitrageurs, odds can shift before your bet is confirmed, and some terms of service explicitly forbid the practice. Use this calculator as a decision-support tool and always review each bookmaker's terms before placing a bet.