EV CALCULATOR

Calculate the expected value of a bet to determine if it's profitable long-term

Calculator

WIN PROBABILITY (%)

AMERICAN ODDS

What is EV?

Expected Value (EV) is the average amount you can expect to win or lose per bet if you could make the same bet infinite times. Positive EV means the bet is profitable long-term.

Formula

EV = (Win% × Profit) - (Loss% × Stake)

Example

If you believe a team has a 55% chance to win and the odds are +100:

Win 55% of the time: gain $100
Lose 45% of the time: lose $100
EV = (0.55 × $100) - (0.45 × $100) = $10
+10% EV on this bet