Expected Value Calculator
Calculate EV based on your probability estimate
Enter as percentage (55) or decimal (0.55)
Understanding Expected Value
Expected Value (EV) is the average amount you expect to win or lose per bet over the long run. It's calculated as:
EV = (Probability × Profit) - ((1 - Probability) × Stake)
Positive EV (+EV) means if you made this bet thousands of times, you'd expect to profit. Negative EV (-EV) means you'd expect to lose.
The key is accurately estimating probability. Your edge comes from being more accurate than the implied odds suggest.
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