Expected Value (EV) Calculator
All calculatorsThis calculator shows what a bet is worth on average, in dollars and as a share of your stake. Enter your stake, the price you are getting, and your own estimate of the win probability, and the numbers update as you type.
Expected Value (EV) Calculator+EV
What it does. It shows what a bet is worth on average, in dollars and as a share of your stake.
How to use it. Enter your stake, the odds you are getting, and your honest read on the true win probability. That last number can come from a model or from the fair price at a sharp book.
Why it matters. A positive number means the bet pays you over time. A negative one means it slowly bleeds you. Run this before you place anything.
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The guide behind this tool, in plain language.
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18+
Informational / entertainment only (21+ where required). Odds from DraftKings via ESPN. Gamble responsibly.