Arbitrage Calculator
An arbitrage calculator checks whether prices on opposite outcomes imply less than 100% probability and, if so, divides stakes to equalize the return. True arbitrage depends on both prices remaining available and the books honoring the same market rules. Limits, voids, timing, and stake restrictions can eliminate an apparent guaranteed profit.
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An arbitrage bet ("arb") happens when you can bet both sides at different sportsbooks and lock in a profit. This calculator tells you whether an arbitrage exists, your edge, and the exact stake split to guarantee the same payout either way.
Enter odds for each outcome (e.g., both moneylines in a 2-way market). For best results, shop lines and use the best price you can find for each side.