Convert decimal odds into probability and return.

This calculator explains the maths. It does not predict an outcome or remove the bookmaker's margin.

How the calculation works

Implied probability = 100 ÷ decimal odds. Total return = stake × decimal odds. Profit = total return − stake.

Why implied probabilities can exceed 100%

When all outcomes in a market are converted, their total often exceeds 100%. The difference is commonly called the bookmaker margin or overround.