This odds to probability reference table shows the probability for a range of odds for (favourable) values, assuming an odds against of 4. Every figure is computed with the same engine that powers our Odds to Probability Calculator, so the numbers are exact.
| Odds for (favourable) | Probability |
|---|---|
| 0.25 | 5.88% |
| 0.5 | 11.11% |
| 0.75 | 15.79% |
| 1 | 20.00% |
| 1.5 | 27.27% |
| 2 | 33.33% |
| 3 | 42.86% |
| 5 | 55.56% |
| 7 | 63.64% |
| 10 | 71.43% |
How to use this table
Find the row closest to your odds for (favourable) and read across to the probability. For a value between two rows, the real figure sits between them — or enter your exact numbers in the Odds to Probability Calculator for a precise answer.
Need a value that is not in the table? — the Odds to Probability Calculator does it instantly, for free, with the formula and a worked example built in.
Related calculators
Continue exploring math calculators with these tools: Margin of Error Calculator, Sample Size Calculator, Confidence Interval Calculator, Coefficient of Variation Calculator, Regular Heptagon Area Calculator.