Free tool

Odds converter

Type odds in any format — decimal, fractional or American — and see all three plus the implied probability instantly. The fastest way to compare prices across bookmakers.

Decimal Fractional American Implied probability

Enter odds in any box.

FAQ

How do I convert decimal odds to fractional?

Subtract 1 from the decimal odds, then express the result as a fraction. For example, 3.50 becomes 2.50/1 = 5/2. Our converter does it instantly.

What is implied probability?

It is the chance of an outcome that the odds represent, as a percentage. For decimal odds, implied probability = 100 ÷ decimal odds. It always adds up to more than 100% across a market — that extra is the bookmaker margin.