Arbitrage Calculator

Calculate how much to bet on each outcome to lock in a guaranteed profit from arbitrage betting. Enter your stake and the odds for each possible result. The calculator supports 2 to 4 outcomes and all major odds formats.

What is Arbitrage Betting?

Arbitrage betting, also known as “sure betting,” is a strategy that takes advantage of differences in odds offered by different sportsbooks for the same event. By placing bets on all possible outcomes using the right proportions, you can guarantee a profit regardless of the result. This is possible when the combined implied probability of all outcomes is less than 100%. Arbitrage calculators help you determine the precise amount to wager on each outcome to lock in a risk-free profit.

How to Use the Arbitrage Calculator

Select the number of outcomes for your event (for example, 2 for a tennis match, 3 for a soccer match with a draw option, or up to 4 for more complex markets).
Choose your preferred odds format (Decimal, American, or Fractional) to match the sportsbook’s display.
Enter your total stake – the total amount you wish to invest across all outcomes.
Input the odds for each outcome as offered by different sportsbooks. Make sure each field matches the selected odds format.
Click “Calculate” to instantly see how much to bet on each outcome, your guaranteed profit (if any), and a step-by-step explanation of the calculation. Review the suggested stakes and place your bets accordingly to secure your arbitrage opportunity.