Implied Probability Calculator
Turn any betting odds into the implied win probability, and the break-even win rate you need at that price.
The picks behind the math
LineScout gives the chance each NFL bet hits, the best price across 7 books, and a record graded in public. In beta: the first 100 sign-ups get Pro free.
Get LineScout freeWhat implied probability means
It's the win rate the price assumes. If you think a bet wins more often than its implied probability, the price is good for you; if less often, it's a bad price even when you win.
The formula
For minus odds: odds ÷ (odds + 100), e.g. 150 ÷ 250 = 60%. For plus odds: 100 ÷ (odds + 100), e.g. 100 ÷ 250 = 40%. For decimal odds: 1 ÷ odds.
Why both sides add up to more than 100%
Add the two sides of a market (−110 and −110 are 52.4% each) and you get about 105%. The extra is the book's margin. Use the no-vig calculator to remove it.
More free tools: Parlay Calculator · Odds Converter · No-Vig Fair Odds Calculator · Expected Value (EV) Calculator · Kelly Criterion Calculator · Hedge Calculator · Arbitrage Calculator · Win Rate & ROI Calculator
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