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Convert between decimal, fractional, and American odds formats instantly. Enter odds in any format and see all three side by side.
Enter odds in any format and see all three instantly.
Different regions use different odds formats. All three represent the same thing — the probability and potential return of a bet — just displayed differently.
Used in Europe and Australia. Shows total return per unit staked. Odds of 2.50 means $2.50 back for every $1.00. Multiply stake by odds for total payout.
Used in the UK and Ireland. Shows profit relative to stake. Odds of 3/2 means $3 profit for every $2 staked. Add 1 to the fraction for the decimal equivalent.
Used in the United States. Positive (+150) shows profit on a $100 bet. Negative (-200) shows how much to bet to win $100.
Even money: 2.00 decimal = 1/1 fractional = +100 American. All three mean you double your stake if you win.
Here are some frequently used odds across all three formats for quick reference.
Positive: divide by 100 and add 1. So +150 becomes 2.50. Negative: divide 100 by the absolute value and add 1. So -200 becomes 1.50.
Divide the first number by the second and add 1. Fractional odds of 3/2 become 1.5 + 1 = 2.50 in decimal. Odds of 1/4 become 0.25 + 1 = 1.25.
Decimal (Europe/Australia) shows total return per unit. Fractional (UK) shows profit relative to stake. American (US) shows winnings on a $100 bet or stake needed to win $100.
Decimal odds are the simplest. Multiply stake by odds for total payout. They also make it easy to compare across bookmakers and calculate implied probability (1 / odds).
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