Free betting calculator
Expected value calculator
Estimate the average profit or loss per wager from your win probability, the offered American odds, and your stake.
Enter positive odds with a plus sign or number, and negative odds with a minus sign.
Expected value+$5.00
EV as % of stake5.00%
Profit if the bet wins$90.91
A calculated edge is an estimate, not a guarantee. Your result is only as reliable as the probability input.
What the result means
Use the number as an estimate
Expected value combines every possible outcome by multiplying each result by its probability. A positive result means your assumptions imply a favorable average return over many comparable bets; it does not predict the result of this bet.
FormulaEV = (win probability × profit if won) − (loss probability × stake)
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