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Password Strength Checker

Your password never leaves your browser.

About this tool

Analyse your password's strength with a detailed score, estimated crack time, checklist, and personalised improvement tips.

Privacy and details

Your files never leave your device.

Fast browser processing with no account required.

Optimized for desktop and mobile with accessible controls.

How to use
  1. Type or paste a password into the input field.
  2. The strength score (0–10), label, and colour bar update instantly.
  3. See the estimated crack time based on brute-force at 10 billion guesses per second.
  4. Review the checklist to see which strength criteria your password passes or fails.
  5. Follow the improvement tips to make your password stronger.
Why use this tool

Most people do not know what makes a password truly strong. This tool gives you immediate, actionable feedback: not just a vague "medium" rating, but a specific checklist of what to fix, and an estimated crack time that puts the risk in concrete terms. Your password is never sent to a server.