Password Entropy Calculator
Calculates a password's entropy in bits, based on its length and the size of the character pool it draws from (lowercase, uppercase, digits, and standard punctuation symbols).
Calculates a password's entropy in bits, based on its length and the size of the character pool it draws from (lowercase, uppercase, digits, and standard punctuation symbols).
Use cases
- Estimating how resistant a password is to brute-force guessing
- Comparing the entropy of two candidate passwords
Examples
Lowercase letters and digits
abc123
{"entropy_bits": 31.02, "pool_size": 36, "length": 6}FAQ
Is my data sent to a server?
Yes — the calculation runs on the server for this tool.