Arbitrage Calculator

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How to use

Use the arbitrage calculator to find how much to bet on each side of an arb.

  • Enter the amount and odds for one side as Stake A and Odds A
  • Enter the odds for the other side, at a different sportsbook, as Odds B
  • Enter the third outcome as Odds C for a three-way market, like a soccer match that can end in a draw

Plus signs are optional in odds fields.

What is arbitrage betting?

An arbitrage, or arb, happens when sportsbooks disagree enough on a market that betting every outcome guarantees a profit. For example, if one book offers +110 on a team and another offers +100 on their opponent, betting $100 and $105 returns $210 whichever side wins, a $5 profit.

When the two sides add up to exactly break-even, it's a zero hold, which is useful for clearing promo requirements without risking money.

Things to watch for

  • Odds move quickly. Place the side most likely to change first.
  • Check that both books use the same rules for the market, such as overtime or player scratches.
  • Sportsbooks may limit accounts that bet arbs regularly.

Already have a bet placed and want to lock in a result? Use the hedge calculator.