Statistics

Implied Probability Calculator

Convert betting odds to implied probability.

Calculated Output

Implied probability (%) 40

Formula: American/decimal odds → implied probability

Step-by-Step Breakdown

1. Values used:

2. Odds value = 150

4. Implied probability = 40%

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The math behind it

American +odds: 100/(odds+100). −odds: |odds|/(|odds|+100). Decimal: 1/odds.

+150 American → 40% implied probability.

Why don't they add to 100%?

The bookmaker's margin ('vig') makes the implied probabilities sum above 100%.