18+ · Local laws apply · Reference only
This site is for adults of legal age only. Use it only where sports betting or prediction markets are legal. Model probabilities, odds comparisons, Kelly sizing, rankings, and backtests are informational references, not betting, investment, financial, legal, or tax advice.
This converter translates decimal, American, and fractional odds into each other and shows the corresponding implied probability. It is for education and research, not betting or financial advice.
Informational and educational only — not betting, financial, legal, or investment advice. 18+; follow local laws.
Decimal
2.500
American
+150
Fractional
3/2
Implied probability
40.00%
Decimal odds are converted to implied probability as 1 ÷ decimal odds. Real market prices may include margin, commission, liquidity effects, and delays, so this value is not a model prediction or a guarantee.
It is the probability implied by an odds price before accounting for market margin and other costs.
No. It is a conversion of a price, not a claim about what will happen.