Learn More About Betting Odds
Not sure how the different odds formats work? Read our Betting School guide to decimal, fractional, American and Asian odds.
Odds Converter
Decimal, fractional, American & implied probability
Convert Betting Odds
Enter a value in any odds field. The other formats and potential payout will update automatically.
Decimal odds
Fractional odds
American odds
Implied probability
Stake amount (USD)
Potential payout $200.00
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How the Odds Converter Works
Betting odds can be displayed in different formats depending on the bookmaker and region. The value behind them is the same: each format describes the potential return and the implied probability of an outcome.
Decimal Odds
Decimal odds show the total return for each unit staked, including your original stake. For example, decimal odds of 2.50 return 2.50 for every 1.00 staked if the bet wins.
Fractional Odds
Fractional odds are commonly used in the UK and Ireland. Odds of 3/2 mean a potential profit of 3 units for every 2 units staked, with the original stake returned separately.
American Odds
Positive American odds show the potential profit from a 100-unit stake. Negative odds show how much must be staked to make a 100-unit profit.
Implied Probability
Implied probability converts the odds into a percentage. It represents the probability suggested by the price before accounting for the bookmaker margin.