Analyze password strength and get security recommendations
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Enter password to check.
Calculates actual bits of entropy for mathematical security scoring beyond simple strength labels.
Checks against databases of millions of leaked and commonly-used passwords.
Provides specific, actionable suggestions to make your password stronger, not just a score.
Everything runs inside your web browser. We never upload your text, files, or personal data to any servers.
No sign-ups, no subscriptions, and no usage limits. Get your results instantly in a single click.
No, all analysis runs entirely in your browser using JavaScript. Your password is never sent to any server or stored anywhere.
50+ bits is considered good, 70+ bits is strong, and 100+ bits is very strong. Most secure passwords need 60-80 bits minimum.
Yes, the checker identifies common words, names, and patterns that weaken password strength even when combined with numbers.
At least 12 characters is recommended for most accounts. 16+ characters with mixed types is considered very strong.
This tool provides more detailed entropy analysis and educational feedback than most password manager strength indicators.
Yes, completely. All calculations and file conversions happen entirely inside your own browser. We do not store, view, or upload any of your input data to our servers.
No. UtilsGo is 100% free. You don't need to create an account, register, or pay for any features.
Built by UtilsGo • Last updated May 2026 • No ads • No tracking