Free Tool
Implied Probability & Overround
Enter the decimal odds for every runner in a race (or both sides of a match) to see the bookmaker's overround and each runner's fair, margin-free odds.
1.implied: 50.0%fair odds: 2.17
2.implied: 33.3%fair odds: 3.25
3.implied: 25.0%fair odds: 4.33
Total implied probability: 108.3%
Bookmaker overround (margin): 8.3%