Odds to Probability Calculator

Convert odds into a probability.

Probability (%) 25

As decimal 0.25

Formula: p = for ÷ (for + against)

Step-by-step with your numbers:

1. Values used:

2. Odds for = 1

3. Odds against = 3

5. Probability = 25%

6. As decimal = 0.25

Did we solve your problem today?

Turn betting-style odds into a probability.

The math behind it

probability = odds for ÷ (odds for + odds against).

1 : 3 → 25%.

Decimal odds?

Implied probability = 1 ÷ decimal odds.