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Password Strength

Type a password to see a strength score, approximate entropy bits, and whether it includes length and character-class signals.

Features

  • Score out of 100
  • Approx entropy bits
  • Character-class checklist
  • Local-only evaluation

How to use Password Strength

  • 1
    Enter a password.
  • 2
    Review score, entropy, and checklist tips.

Examples

Weak vs strong

Input
password vs Str0ng!Pass-Phrase
Output
Higher score for longer mixed charset

About Password Strength

Password Strength Checker provides a local heuristic score and entropy estimate so you can improve passwords before using them - not a breach database lookup.

Frequently asked questions

No. It only scores composition heuristics locally.

No.

It’s a guide. Prefer long unique passwords stored in a manager.

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