Odds converter
Enter a price in any format and get the others, plus the probability it implies. American is standard in the United States, decimal across Europe and Australia, fractional in British racing — the same price written three ways.
- American
- -110
- Decimal
- 1.909
- Fractional
- 10/11
- Implied probability
- 52.4%
Common questions
- How do you convert American odds to decimal?
- For a positive price, divide by 100 and add 1: +150 becomes 2.50. For a negative price, divide 100 by the absolute value and add 1: -110 becomes 1.909.
- What does -110 mean?
- You stake 110 to win 100. It is the standard price on a spread or a total, and it implies a 52.4% chance — the 2.4 points above an even 50% is how the book charges for taking the bet.
- How do you work out implied probability?
- Divide 1 by the decimal odds: 2.50 implies 40%. That figure includes the bookmaker's margin, so the probability the book is really working with is a little lower.