Use this calculator to spot arbitrage opportunities across different bookmakers. Enter the odds and your total stake — we’ll calculate your exact stakes and guaranteed profit.
Arbitrage betting (also known as "sure betting") is a strategy where you place bets on all possible outcomes of an event across different bookmakers, taking advantage of discrepancies in odds. When done correctly, it guarantees a profit regardless of the outcome.
This happens because different bookmakers may offer different odds based on their internal risk assessments or regional preferences. By comparing odds and allocating stakes proportionally, bettors can ensure they make a return — no matter who wins.
It is especially effective in markets like 1X2 football, tennis matches, or any event with two or three mutually exclusive outcomes.
To identify an arbitrage bet, you calculate the total **implied probability** using this formula:
(1 / Odds 1) + (1 / Odds 2) [+ (1 / Odds 3 if 3 outcomes)]
If the result is **less than 1.00 (or 100%)**, you have an arbitrage opportunity. This means the odds are misaligned enough between different bookmakers to lock in a profit — if you place the right stake on each outcome.
Implied probability = (1 / 2.60) + (1 / 3.60) + (1 / 3.20) = 0.3846 + 0.2777 + 0.3125 = 0.9748 (97.48%)
✔️ Since it's less than 1.00, this is an arbitrage opportunity.
(1 / 2.20) + (1 / 1.87) = 0.4545 + 0.5347 = 0.9892 (98.92%)
✔️ Also below 100% → arbitrage is possible.
(1 / 2.10) + (1 / 3.30) + (1 / 3.00) = 0.4762 + 0.3030 + 0.3333 = 1.1125 (111.25%)
❌ Above 1.00 → no arbitrage.
(1 / 1.95) + (1 / 1.95) = 0.5128 + 0.5128 = 1.0256 (102.56%)
❌ No arbitrage.