Back to home
Developers
Password Entropy
Strength in bits from character set
Runs locally in your browser
Parameters
Results
- Entropy
- 104.9 bits
- Combinations
- 3.72e+31
- Rating
- Very strong
How it works
Estimate password strength in bits of entropy from length and character set size.
Who it's for: Developers and security-conscious users evaluating password policies.
Entropy = length × log₂(charset size) in bits.
Charset options from lowercase only through full ASCII symbols.
Rates strength as Weak, Moderate, Strong, or Very strong.
How to use
- Enter Length and Character set size.
- Read Entropy (bits), Combinations, and Rating.
Good to know
- Use a password manager to generate and store high-entropy passwords.