Betting odds, one price at a time
Every common betting price explained on its own page: decimal, American and fractional equivalents, implied probability, payouts and exchange odds.
- American odds-110, +150 and every price from -10000 to +10000.
- Decimal odds1.01 to 100.00, the format used across Europe and on exchanges.
- Fractional oddsThe traditional bookmaker ladder from 1/50 to 1000/1.
- Polymarket prices1¢ to 99¢ shares as sportsbook odds.
How to use these pages
Pick a format and a price. Each page shows the same price in every other notation, what it pays on common stakes, the break-even win rate, the vig if both sides of a market were priced that way, and what the price is worth on an exchange after commission. A converter is pre-filled with the value so you can change it in place.
The three formats
American odds show profit on 100 (positive) or the stake needed to win 100 (negative). Decimal odds show the total return per unit staked. Fractional odds show profit relative to stake in the traditional bookmaker ladder. Prediction-market prices in cents are a fourth notation that equals the implied probability directly.