This password entropy reference table shows the entropy for a range of password length values, assuming a character set size of 94. Every figure is computed with the same engine that powers our Password Entropy Calculator, so the numbers are exact.
| Password length | Entropy | Possible combinations (log10) |
|---|---|---|
| 3 | 19.7 | 5.9 |
| 6 | 39.3 | 11.8 |
| 9 | 59.0 | 17.8 |
| 12 | 78.7 | 23.7 |
| 18 | 118.0 | 35.5 |
| 24 | 157.3 | 47.4 |
| 36 | 236.0 | 71.0 |
| 60 | 393.3 | 118.4 |
| 84 | 550.6 | 165.7 |
| 120 | 786.6 | 236.8 |
How to use this table
Find the row closest to your password length and read across to the entropy. For a value between two rows, the real figure sits between them — or enter your exact numbers in the Password Entropy Calculator for a precise answer.
Need a value that is not in the table? — the Password Entropy Calculator does it instantly, for free, with the formula and a worked example built in.
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