Password Strength Estimator

Estimate password strength using entropy (bits). This tool runs locally in your browser and does not send data anywhere.

Tip: a long passphrase is often stronger than a short complex password.
Auto checks if you used lowercase/uppercase/digits/symbols.
Example: 26+26+10+10 ≈ 72.
Used only for rough time tiers.
Rounding for readability.
Adds a simple warning if too short.