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Test how strong your password really is
🔒 Checked entirely in your browser — your password never leaves this page.
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Get Started →Type any password above and this tool rates its strength in real time, estimating how long a fast attacker would need to crack it. The analysis happens entirely in your browser — nothing is ever transmitted. Need a stronger one? Use our strong password generator.
Scores reward length first, then a mix of character types, and penalise short or simple passwords. A "Very Strong" result means a long password with upper- and lower-case letters, numbers, and symbols.
Yes. Your password is analysed entirely in your browser using JavaScript. It is never sent over the internet, logged, or stored. You can even disconnect from the internet and it still works.
Length is the biggest factor, followed by using a mix of uppercase, lowercase, numbers, and symbols, and avoiding dictionary words and common patterns.
It's a rough estimate based on the size of the character set and the password's length, assuming a fast offline attacker. Treat it as a guide, not a guarantee.