Loading your page…
Loading your page…
Free calculator
Switch between decimal, American, fractional, and probability formats.
Calculator inputs
Updates as you type
Choose a format and enter odds to see the conversions.
Enter odds in any format and the calculator returns the same price in decimal, American, and fractional notation, plus the implied probability each format encodes.
For positive American odds, divide by 100 and add 1. For negative odds, divide 100 by the odds and add 1. The converter handles both directions automatically.
The chance of an outcome that the odds imply once margin is included. A decimal price of 2.00 implies 50%. Prices above 100% total across outcomes are where the bookmaker margin sits.
Most scanners work in decimal. Conversion matters when a bookmaker's local format differs from what your scanner reads.