Odds to Probability Calculator
Convert odds (for or against) to a probability, or a probability to odds.
Probability
25%
- As a decimal
- 0.25
- Chance it doesn't happen
- 75%
Show the work
It happens a times in every a + b
p = a ÷ (a + b)
1 ÷ (1 + 3) = 0.25
As a percentage
p × 100
0.25 × 100 = 25%
How it works
Odds for a : b → probability = a ÷ (a + b); odds against a : b → probability = b ÷ (a + b); probability p → odds for = p : (1 − p)
Questions
- How does the odds to probability calculator work?
- Odds for a : b → probability = a ÷ (a + b); odds against a : b → probability = b ÷ (a + b); probability p → odds for = p : (1 − p).
- What do I need to enter?
- Convert, a, b, Probability. Optional fields can be left blank.
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