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    Free tool

    Arbitrage calculator

    Split one stake across bookies so every outcome pays the same.

    The market

    Enter the best odds you can get for each outcome. The names and bookmakers are just labels — only the odds and the stake change the maths.

    $
    100
    0
    0

    How to split it

    Place each stake at its bookmaker and you finish on the same number whichever outcome lands.

    Fill in the odds for each outcome to see the stakes.

    How it works

    • Add up 1 ÷ odds for every outcome. Under 100% is an arb.
    • Each stake = total stake × (1 ÷ its odds) ÷ that sum, so every outcome returns the same.
    • Profit = total stake ÷ sum − total stake.

    Betting involves risk. Bookmakers can restrict or close accounts and void bets, automation can fail, prices move, and a positive expected value (+EV) bet can still lose. Promotions carry each bookmaker's own terms. There is no guarantee of profit. See responsible gambling for limits and support.

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    By the B337 team. Last updated 8 October 2026.

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    B337 is software, not a bookmaker or wagering service provider. Bets are placed in accounts you hold with Australian bookmakers. Bookmaker names are trade marks of their owners; B337 is not affiliated with or endorsed by them. Bookmaker terms may restrict automated betting.

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