Enter the odds for each outcome. The calculator shows bookmaker's margin, implied, real probabilities and fair odds.
Margin = (1/Odds1 + 1/Odds2 + ... + 1/Oddsn) × 100 − 100
Example: Nottingham Forest - Brentfor (1x2)
William Hill odds: 2.2 − 3.4 − 3.1
Margin = (1/2.2 + 1/3.4 + 1/3.1) × 100 − 100 = 7.12%
