Margin Calculator

Calculate bookmaker margin, overround, and market percentage from decimal odds.

Bet sides
Margin check
11.90  +  11.90  =  105.26%\dfrac{\normalsize 1}{\normalsize 1.90} \; {\normalsize +} \; \dfrac{\normalsize 1}{\normalsize 1.90} \; {\normalsize =} \; {\normalsize 105.26\%}
This market includes bookmaker margin: the combined implied probability is above 100%.
Margin summary
Market percentage105.26%
Bookmaker margin5.26%