Password generator
Mix uppercase, lowercase, numbers and symbols. Every extra character multiplies the number of possible passwords — entropy measures that in bits.
Your password
Generated in your browser with a cryptographic RNG.
Select at least one character set
Options
Length and character sets.
16
Entropy
How much randomness this password carries.
102.8bits
Very strong
- Character pool
- 86 symbols
- Length
- 16
- Combinations
- 8616 ≈ 2103
- Brute force at 10B guesses/sec
- 14,195 million years
Entropy = length × log₂(pool size). Doubling the pool adds one bit per character; adding one character adds log₂(pool) bits.
Test your own password
Type any password to score it. Nothing leaves your browser — no network calls, no logging.
Enter a password above to see its estimated entropy and weaknesses.