Guides
How to Calculate Implied Probability in Sports Betting
Understand implied probability from American and decimal odds so you can compare bookmaker pricing with your own projection.
1 min read
Implied probability translates odds into a percentage chance. This lets you compare bookmaker pricing against your own model.
From Decimal Odds#
Use:
- Probability = (1 / Decimal) * 100
Example for 2.00 decimal:
- (1 / 2.00) * 100 = 50%
From American Odds#
For positive odds:
- Probability = 100 / (American + 100)
For negative odds:
- Probability = |American| / (|American| + 100)
Example for -110:
- 110 / (110 + 100) = 52.38%
Why It Matters#
A bet only has value when your estimated probability is higher than implied probability.
Use the Single Bet Calculator and Odds Converter together to compare prices quickly.
Common Questions
What is implied probability?
Implied probability is the win rate suggested by the odds, expressed as a percentage.
How do you get implied probability from decimal odds?
Use 1 / decimal odds, then multiply by 100 for percentage.