Odds Converter
Convert between American, decimal, and fractional odds formats instantly.
Understanding Odds Formats
American odds show how much you win on a $100 bet (positive) or how much you must bet to win $100 (negative). Decimal odds represent the total return per $1 wagered, including your stake. Fractional odds, common in the UK, show profit relative to stake (e.g., 3/1 means $3 profit on a $1 bet). Implied probability tells you what percentage of the time a bet needs to win to break even at those odds. Converting between formats helps you quickly compare lines across different sportsbooks.
Frequently Asked Questions
What's the difference between American, decimal, and fractional odds?
American odds show profit on a $100 bet (positive) or stake to win $100 (negative). Decimal odds show your total return per $1 wagered including stake. Fractional odds (UK style) show profit relative to stake - 5/2 means $5 profit on a $2 bet.
How do I convert -110 odds to decimal?
-110 American = 1.909 decimal. Formula: 1 + (100 / 110) = 1.909.
What does implied probability mean?
Implied probability is the percentage of the time a bet needs to win to break even at the given odds. -110 implies a 52.4% probability.
Which odds format is best?
Decimal is easiest for math (multiply for parlays, compare directly). American is the US standard. Fractional is traditional in UK racing. The math is identical - pick whichever you read fastest.