Password Strength Checker

Get a local, dictionary-based estimate of a password's strength.

Inputs stay on your device No sign-up Free to use
How this works

The tool runs in this browser. Your file or text is not uploaded to UseFreeTools. Check this tool's limits for anything it may save on your device.

Privacy details

Check strength controls

Showing an example. Edit to see your own.

Checked in this browser. The password is not shown in the result. Prefer a unique password from a password manager.

Processed in your browser. Your inputs stay on this device.

How to use Password Strength Checker

  1. Enter a password in the masked field.
  2. The estimate appears as you type and stays on this device.
  3. Read the strength label and length without exposing the password in the result.
  4. Use a unique password from a password manager and enable multi-factor authentication where possible.

Example: Password Strength Checker

Check an obvious sample password, not a real secret.

You add
password123
You get
A weak or very weak estimate appears, with a length count. The entered password is not repeated in the result.

Supported inputs and limits

A strength score is an estimate, not proof that a password is safe or uncompromised. This tool does not check breach databases. It evaluates at most 256 characters locally. Avoid entering a real password into any tool you do not trust; use a password manager's built-in check when available.

Where your input is processed

This tool processes your input in this browser. Your text and files are not uploaded to UseFreeTools. Check this tool's limits for anything it may save on your device.

Questions about Password Strength Checker

Does the result show the password I typed?

No. The field is masked and the result shows only a strength label and length.

Does this check whether a password was leaked?

No. It uses local pattern and dictionary checks, not a breach database.

Does Strong mean the account is safe?

No. Reuse, phishing, stolen devices and compromised services can still put an account at risk.

What should I do with a weak password?

Create a unique replacement with a password manager, then change it on the account and enable multi-factor authentication if offered.

Project manager: Tony Hines · Content updated 29 September 2026 · Report a problem