Betting Tools
Bookmaker Margin Calculator
Enter the home, draw and away odds for a match to see the bookmaker margin (overround) and what the fair odds would be without it.
Bookmaker margin
5.60%
Fair home
2.22
Fair draw
3.59
Fair away
3.70
What is the bookmaker margin?
Bookmakers price every outcome slightly shorter than its true chance. Add up the implied probabilities of all outcomes: anything above 100% is the margin.
Why does it matter?
A lower margin means better prices for you. Comparing margins across bookmakers shows where you get the most value for the same match.
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