Password Strength Checker

Check a sample password against length, character groups and obvious patterns. Review the local rating and clear the input when done.

Use a sample to see how this rule-based workspace responds to length, variety and predictable patterns.

  • 100% free
  • No registration
  • On your device
  • Modern browser
  1. 1Enter details
  2. 2Adjust options
  3. 3View result

Checked locally. This heuristic does not check breach databases or estimate cracking time. Avoid entering a real account password on shared devices.

Your input stays on this device for this operation. We don’t upload or store it.

About Password Strength Checker

Use a sample to see how this rule-based workspace responds to length, variety and predictable patterns.

Heuristic rating

Length, groups and simple patterns contribute to the result.

Reveal control

Choose whether the input is visible on screen.

How to use Password Strength Checker

  1. 1

    Enter a sample

    Type in Password to check.

  2. 2

    Read the assessment

    Review the rating, length and group count.

  3. 3

    Clear the input

    Use Clear password when finished.

Formats and practical limits

Sample password → heuristic rating and suggestions

  • The tool does not check breach databases or estimate cracking time.
  • A high rating does not establish account safety.

Practical example

Enter password123 as a sample to see the common-pattern rule mark it Weak.

Further reading

Frequently Asked Questions

1 answers
Does Strong prove it has never leaked?

The rating comes from local rules and does not check prior exposure.