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UKSports Betting Odds Calculator: Convert Odds & Calculate Payouts
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This betting odds calculator makes it easy to translate between different formats. Simply enter the amount you want to bet with the odds you have available, and the calculator automatically displays the odds in American, Decimal, and Fraction formats.
It also lists the implied probability of winning, how much you stand to win from the bet, as well as your total payout (including the stake).
Our Odds Calculator
How to Use The Calculator
Our sports betting calculator is extremely easy to use; all you need to do is enter your wager amount with the odds of the bet, and the calculator fills out the rest.
You can use our calculator to bolster your sports betting strategy by learning exactly what your risk and potential rewards are before you place your bet.
Sports Betting Odds Conversion Chart
Use this chart to quickly compare American, decimal, and fractional odds, along with implied probability and potential profit from a $100 bet.
| American | Decimal | Fractional | Implied Probability | $100 Stake |
|---|---|---|---|---|
| -200 | 1.50 | 1/2 | 66.67% | $50 |
| -150 | 1.67 | 2/3 | 60.00% | $66.67 |
| -110 | 1.91 | 10/11 | 52.38% | $90.91 |
| +100 | 2.00 | 1/1 | 50.00% | $100 |
| +150 | 2.50 | 3/2 | 40.00% | $150 |
| +200 | 3.00 | 2/1 | 33.33% | $200 |
| +300 | 4.00 | 3/1 | 25.00% | $300 |
Bettings Odds Calculator FAQs
Use your format’s formula, then add your stake for total payout. Positive American: stake × (odds ÷ 100). Negative American: stake ÷ (odds ÷ 100), ignoring the minus. Fractional: stake × fraction. Decimal: stake × odds equals total payout.
The sportsbook’s margin, called the vig or juice, is built into the odds. If both sides of a game are priced at -110, each implies 52.4%, totaling about 104.8%. That extra 4.8% is the book’s edge.
Convert each leg to decimal odds, multiply them together, then multiply that result by your stake for the total payout. Every leg must win for the parlay to pay, so one losing leg sinks the entire ticket.
No format is best for payouts, because all three display the same bet differently. Decimal odds make math and parlays easiest, American odds are the US standard, and fractional odds are common in UK and Irish horse racing.
Convert the odds to implied probability, then compare it with your own estimate of the chance of winning. If your estimate is higher, the bet has positive expected value. Rating a +150 line (40% implied) at 50% signals value.