Free betting tools

The calculators we use ourselves — free, no sign-up, and they work on your phone.

Bet builder calculator

Work out the fair odds of any bet builder and see whether your bookmaker's price is value.

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Odds converter

Fractional, decimal, American and implied probability — convert any price instantly.

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Bookmaker margin calculator

See how much margin is built into a market, and the fair odds once it's taken out.

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Value bet calculator

Compare a bookmaker's price with the fair price and see the edge and expected profit.

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Arbitrage calculator

Two or three outcomes, back or lay: exact stakes for a guaranteed profit.

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See the tools in action

Every SureBetUK alert does these sums for you — stakes, edges and fair prices worked out before it reaches your phone.

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