Betting Expected Value Calculator
Expected value, or EV, is the average amount a bet would win or lose if you could place it many times over. A positive EV bet is one where your estimated chance of winning beats the price the book is offering, which is the only reliable way to profit from betting in the long run. This calculator asks for your true win probability, the odds in American or decimal form and your stake, then returns the expected value in money, the EV as a percentage of your stake and the break even probability the odds imply. Compare the implied probability to your own and you can instantly see whether a line has value. Everything computes locally in your browser.
How to use Betting Expected Value Calculator
- Enter your true win probability.
- Enter the odds and your stake.
- Read the expected value in dollars and whether it is positive.
Frequently asked questions
How is expected value calculated here?
EV equals your true win probability times the profit if you win, minus the loss chance times the stake, giving the average dollar result per bet.
What does a positive EV mean?
A positive EV means the math says the bet returns more than it costs on average at your assumed probability; a negative EV means it loses value over time.
Why does the true probability input matter so much?
EV is only as good as your probability estimate, since a small change in the assumed win chance can flip a bet from positive to negative EV.
What is Betting Expected Value Calculator?
Expected value, or EV, is the average amount a bet would win or lose if you could place it many times over. A positive EV bet is one where your estimated chance of winning beats the price the book is offering, which is the only reliable way to profit from betting in the long run.
Is Betting Expected Value Calculator free to use?
Yes. Betting Expected Value Calculator is completely free, with no sign-up and no usage limits.
Does Betting Expected Value Calculator work in a web browser?
Yes. Betting Expected Value Calculator runs in any modern web browser. There is nothing to download or install.
Is my data private with Betting Expected Value Calculator?
Yes. Betting Expected Value Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.
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