Easily switch between American, decimal, and fractional odds using our Odds Converter. Enter any line or price to instantly see its equivalent in every format — plus the implied probability that each set of odds represents. This helps you make true apples-to-apples comparisons across sportsbooks and markets, no matter how the odds are displayed.

Why use the Odds Converter?

Common questions we receive and strategies for using this calculator

Why should bettors use an Odds Converter?

Using an Odds Converter helps you make faster, more informed betting decisions. Here are the biggest advantages:

Global betting: Sportsbooks around the world use different odds formats. If you bet or shop lines outside your home country, converting odds lets you compare everything on equal footing.
Comparing prices: When you’re line shopping, odds may be listed as American, decimal, or fractional. Converting them quickly helps you see which book is offering the best value.
Risk assessment: Converting odds to implied probability shows the real chance of an outcome, helping you judge whether a bet is worth the risk.
Versatility: As you get more experienced, you may prefer working in a single odds format. The converter lets you toggle formats instantly based on your strategy.

By standardizing odds into the format you prefer, you reduce confusion, spot mispriced lines faster, and improve your overall decision-making as a bettor.

What are American odds, and why are they used?

American odds show how much you need to risk to win $100 (negative odds) or how much you win on a $100 bet (positive odds).

Example:
- –110 means you must risk $110 to profit $100.
- +110 means a $100 bet returns $110 in profit.

American odds are the standard format in the United States and often appear in Canada as well, but most of the world uses decimal odds. Regardless of the format, the underlying probabilities can be converted so bettors everywhere can compare prices on the same terms.

What are decimal odds and where are they used?

‍Decimal odds show the total return on a bet, including your stake.

Example:
- With decimal odds of 2.0, a $100 bet returns $200 ($100 stake + $100 profit).

This format is the standard across Europe, Australia, and most of the global sports betting market because it makes payouts easy to calculate at a glance.

What are fractional odds and where are they used?

Fractional odds are common in horse racing and still popular in the U.K. market.

They show profit relative to your stake.

Example:
- 3/1 fractional odds mean a $100 bet returns $300 profit plus your $100 stake, for a total return of $400.

What is implied probability?

The implied odds convert a sportsbook’s line into the percentage probability of an outcome.

If the implied probability is 33%, the market is indicating roughly a 1-in-3 chance that the event occurs.

This helps bettors compare market pricing to their own projections and find value.

Why does the converter say I entered decimal odds when I want to convert from probability?

Add a percent sign (%) when entering probabilities. For example: enter 33%, not 0.33, so the tool knows you're converting a probability — not decimal odds.