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Implied Probability Calculator

Convert any odds format to its implied win probability.

Implied probability is what the price says about win likelihood. -110 implies 52.4%; +200 implies 33.3%. Compare to your true probability estimate to find +EV bets.

Implied probability
Decimal odds
$100 stake returns

Use our odds converter for full 4-way conversion.

FAQ

Is this calculator free?

Yes. All our calculators run client-side in your browser. No sign-up, no data sent anywhere, no ads.

Are the calculations accurate?

Yes. We've validated every formula against industry-standard math. The math is the same that pro bettors use.