Implied Probability Calculator
What is Implied Probability?
Implied probability is the probability of an outcome as suggested by betting odds. It represents what the bookmaker believes is the likelihood of an event occurring, including their built-in profit margin.
This calculator instantly converts between fractional, decimal, American odds and probability percentage, making it easy to compare odds across different formats and bookmakers.
Odds Converter
Enter fractional odds
Enter decimal odds
Enter American odds
Enter probability percentage
How to Use This Calculator
This calculator allows you to convert between different odds formats in real-time. Simply enter a value in any of the four fields, and the other three will automatically update.
- Fractional Odds: Enter odds like 10/11 or 3/2
- Decimal Odds: Enter odds like 1.91 or 2.50
- American Odds: Enter odds like -110 or +150
- Probability %: Enter the probability as a percentage (0-100)
Note: The probability shown includes the bookmaker's margin (vig). To find the true probability, you'll need to remove the vig using our No-Vig Calculator.
Tips & Best Practices
- Use this tool to quickly compare odds from different bookmakers in your preferred format.
- Higher implied probability means the bookmaker thinks the outcome is more likely to occur.
- Compare implied probability with your own assessment to identify value bets.
- Remember that implied probability includes vig - actual probability may be lower.
