Convert odds between different formats. Enter odds in any format and see the equivalent in all other formats.

Fraction

Decimal

American

Probability %

How to read odds: Decimal odds show your total return for every $1 wagered. American odds show how much you win (+) or need to bet (-) to win $100. Fractional odds show profit relative to stake. Probability shows the implied chance of the outcome occurring.

How to Convert Betting Odds

Sportsbooks around the world display odds in different formats. American odds (moneyline) are standard in the US and Canada, decimal odds are used across Europe, Australia, and Asia, and fractional odds are traditional in the UK and Ireland. This free odds converter lets you switch between all four formats instantly.

Understanding Odds Formats

American odds show how much you win on a $100 bet (positive) or how much you need to bet to win $100 (negative). For example, +150 means a $100 bet returns $150 profit.
Decimal odds represent your total payout per $1 wagered, including your stake. Odds of 2.50 mean a $1 bet returns $2.50 total.
Fractional odds show profit relative to stake. Odds of 3/2 mean you profit $3 for every $2 wagered.
Implied probability converts odds into a percentage chance the event occurs. Lower odds mean a higher implied probability.

Why Convert Odds?

Comparing odds across sportsbooks is essential for finding the best value. By converting odds to a common format, you can quickly spot which book offers the highest payout. Pair this tool with our Arbitrage Calculator to identify arbitrage opportunities, or use our Expected Value Calculator to evaluate the expected value of a bet.