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Arbitrage calculator for arb betting

The surebet calculator splits your stake across two or three sportsbooks that cover every outcome of a game, so the return is the same whoever wins. Enter the odds, start from the stake on the first sportsbook or from the total you want to invest, and read the stakes, the rating and the profit in every scenario. It is the same calculator built into the SureBet scanner members use.

How it works in 3 steps

  1. 1

    Choose how to set the stake

    Start from the stake on the first sportsbook (Stake 1) or from the total to spread (Total Stake): the calculator derives the rest.

  2. 2

    Enter the odds

    Copy the odds of each outcome from its sportsbook: two for a moneyline, three for a three-way market. Add bet covers extra outcomes.

  3. 3

    Read stakes, rating and profit

    The calculator shows how much to stake at each sportsbook, the rating of the combination and the profit if each outcome wins. With a free account you save it to the Bet Tracker.

Frequently asked questions

What is a surebet?

A set of bets on every outcome of a game, at different sportsbooks, where the implied probabilities of the odds add up to less than 100%: the margin is yours whatever the result.

How do I know if the odds form a surebet?

Add 1/decimal odds for every outcome: below 1 means arbitrage. The calculator converts American odds, shows the rating (100% = break-even, above = positive margin) and the profit.

How much does a surebet make?

Typically 1-3% of the total stake. The calculator shows it in dollars for every outcome, so you see at once whether it is worth placing.

Do I need a prediction market account?

No: arbs are placed between sportsbooks. There is no commission by default, but you can enter one on any leg if your book applies it.

Where do I find surebets?

NinjaBet's SureBet scanner compares live prices across licensed sportsbooks and lists the combinations with a positive margin, stakes already calculated.

Create a free account to save your surebets to the Bet Tracker

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