Statistics & Probability
Odds → Probability
Convert odds a:b to probability.
Formula
Formula
P = aa + b
Variables
| Symbol | Definition | Type & range | Units | Role |
|---|---|---|---|---|
| a | favorable | real number (ℝ) | for | input |
| b | unfavorable | real number (ℝ) | against | input |
Try it yourself
Interactive calculator
Worked examples
Example 1
Givena (for) = 3, b (against) = 2
Result0.6
Example 2
Givena (for) = 1, b (against) = 1
Result0.5