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Expected value calculator

Compare the odds available at your bookmaker with a fair reference price. Calculate the expected value of a bet before you place it.

Your inputs

Your bookmaker odds

Fair odds

Decimal odds. Calculations run entirely in your browser; no data is saved.

Expected value

+5.82%

Fair probability52.91%

Expected value+5.82%

Positive modelled edge. Actual outcomes remain uncertain.

What expected value means

EV = (your odds / fair odds − 1) × 100%. At odds 2.00 against fair odds 1.89, the modelled EV is +5.82%. Fair odds are an estimate, not a guarantee.

These tools provide mathematical estimates, not financial advice or betting recommendations.

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