Odds Converter
American, decimal, fractional, implied probability. All four linked. Type in any one and the rest update in real time.
All four formats describe the same odds. Use whichever matches your sportsbook. Implied probability is the win rate the book is pricing in.
One number, four ways to read it
Different sportsbooks display the same line in different formats. The math is identical. The cognitive load isn't.
Auto-format on every page
In the dashboard, set your preferred odds format once and every line on every page renders that way. No converter needed if you stay in one format.
Cross-region line shopping
Pinnacle prices in decimal, DraftKings in American. The dashboard normalizes every book to your preferred format so you can compare prices in a single glance.
Probability-first thinking
Most sharp bettors think in probabilities, not odds. The dashboard surfaces the implied probability next to every line so you can compare it to your model output directly.
Sharp-fair conversion
Beyond format conversion, the dashboard takes any market price and shows the no-vig fair price beside it, so you always know whether the number you are about to bet is sharp or soft.
Frequently asked questions
For positive American odds, decimal = (american / 100) + 1. So +150 becomes 2.50. For negative American odds, decimal = (100 / abs(american)) + 1. So -150 becomes 1.667.
Subtract 1 from the decimal odds, then express the result as a fraction. Decimal 2.50 minus 1 is 1.50, which is 3/2. Decimal 1.91 minus 1 is 0.91, which is approximately 10/11.
Implied probability is the win rate the book is pricing into the line. Compute it as 1 / decimal odds. A line at -110 (decimal 1.91) has implied probability of 52.4%, meaning the book expects that side to win 52.4% of the time at the offered price.
American odds reference $100. Negative numbers tell you what to risk to win $100; positive numbers tell you what you win on a $100 stake. The format is regional preference. Decimal is dominant in Europe, Australia, and Asia; fractional is traditional in the UK and Ireland.
Decimal is easiest for shopping across books because the bigger number always means the better price. American odds can be confusing when comparing -110 to +105 mentally; converting both to decimal makes the comparison instant.
Convert once, never convert again
The dashboard renders every line in your preferred format automatically. Set it once in settings and forget the converter exists.