Input odds from different bookmakers for the same event and instantly discover guaranteed profit opportunities. See the exact stake split and locked-in profit percentage.
Select 2 outcomes for sports like tennis or 3 outcomes for football (home/draw/away). Enter the best odds from different bookmakers.
Set your total investment. The calculator will split this across bookmakers to guarantee profit regardless of the outcome.
If the combined margin is below 100%, you have an arbitrage opportunity. Place the exact stakes shown at each bookmaker.
Arbitrage betting (or “arbing”) exploits differences in odds between bookmakers to guarantee a profit regardless of the outcome. It works because different bookmakers sometimes disagree on the probability of an event, creating a window where the combined implied probability drops below 100%.
For example, if Bookmaker A offers 2.20 on a home win and Bookmaker B offers 2.00 on an away win in a tennis match, the combined implied probability is (1/2.20 + 1/2.00) = 95.5%. Since this is below 100%, there’s a 4.7% guaranteed profit available.
Real arbitrage opportunities are typically small (1-5% profit) and short-lived. Speed is essential — odds move quickly, and the window can close within minutes. Professional arbers use automated tools to scan odds across dozens of bookmakers simultaneously.
See Also: Use our Odds Converter to ensure you're comparing odds in the same format, and our Margin Calculator to gauge bookmaker value. The Hedge & Lay Calculator can complement arbing with exchange-based strategies.
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