1X2 Overround & Fair Odds Calculator
Understanding Overround and Fair Odds
Bookmakers build a profit margin into their prices. The sum of the implied probabilities from all outcomes is known as the book percentage.
Any percentage above 100% is called the overround or bookmaker margin.
To be profitable in the long term, you need to overcome the bookmaker margin.
This calculator removes the margin from a football 1X2 market and estimates the fair probabilities and fair odds for each outcome.
Example
- Home: 2.10
- Draw: 3.50
- Away: 3.80
- has a book percentage of 102.51%, meaning the bookmaker margin is 2.51%.
These prices create a market percentage above 100%. The calculator removes the bookmaker's margin and estimates the odds that would exist in a perfectly fair market (100% book).
⚽ Football Betting Calculators
Convert Home, Draw and Away odds into BTTS probabilities, expected goals and likely scorelines.
Calculate returns from accumulators, doubles and trebles.
Convert decimal, fractional and American odds.
Calculate bookmaker margin and fair odds.
Compare your estimated probability against bookmaker odds to identify value bets.
Calculate back-to-lay and lay-to-back trades, hedge stakes, tick movements and greened-up profit.