Sports betting odds can be displayed in different formats, which can make comparing lines confusing. Enter American, decimal, fractional, or implied probability odds, and this calculator will instantly convert them into the other formats so you can understand the price and implied probability – no manual math, no guesswork.
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Odds Converter Calculator
Enter odds in one format to instantly convert them into American odds, decimal odds, fractional odds, and implied probability.
Converted Odds
For education only. Odds formats express the same underlying price in different ways. Always verify current odds with your sportsbook before placing a wager.
How to Use the Odds Converter Calculator
The Odds Converter Calculator helps you quickly convert betting odds between American, Decimal, Fractional, and Implied Probability formats. Enter the odds in the format you already have, and the calculator will automatically show the equivalent values in the other formats.
Inputs
- Odds Format – Choose the format of the odds you want to convert: American, Decimal, Fractional, or Implied Probability.
- Enter Odds – Enter the odds you want to convert. For example, you could enter -110 for American odds, 1.91 for decimal odds, 10/11 for fractional odds, or 52.38 for implied probability.
Outputs
- American Odds – Shows the converted odds in the American format commonly used by U.S. sportsbooks.
- Decimal Odds – Shows the decimal equivalent, which represents the total return for every $1 wagered, including your original stake.
- Fractional Odds – Displays the odds as a fraction, such as 3/2 or 10/11.
- Implied Probability – Shows the percentage chance of winning that is implied by the betting odds.
Example: Enter -110 as American odds and the calculator will return approximately 1.91 decimal odds, 10/11 fractional odds, and a 52.38% implied probability.
Keep in mind that implied probability is based on the betting price. It should not be interpreted as the actual probability that a team or wager will win.