Utilities

Password Strength Checker

Check how strong your password is with a detailed security analysis and crack time estimate.

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Enter Password to Check

Your password is never sent anywhere — analysis happens entirely in your browser.

Start typing to check password strength

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About this tool

How to use Password Strength Checker

1Type your password in the input field (it stays in your browser — never sent anywhere)
2View the strength meter and label (Very Weak to Very Strong) in real time
3Check the estimated time to crack using brute-force
4Review the security checklist to see what your password is missing

Frequently Asked Questions

Is it safe to enter my real password here?

Yes. The analysis runs entirely in your browser using JavaScript. Your password is never sent to any server. You can also verify this by disconnecting from the internet and testing the tool.

How is crack time estimated?

Crack time is estimated by calculating the total possible password combinations (character space × length) and dividing by an assumed rate of 10 billion guesses per second, which represents a modern GPU brute-force attack.

What makes a password strong?

A strong password has 12+ characters (16+ is better), includes uppercase, lowercase, numbers, and symbols, does not contain dictionary words or common patterns, and is unique (not reused across sites).