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What is Password Strength?

A strong password is long, unpredictable, and avoids common patterns — but 'strong' is hard to define without a scoring system. DailyDevTools' Password Strength Checker evaluates passwords using the zxcvbn algorithm, which estimates crack time based on pattern matching, dictionary attacks, and common password databases — giving you a realistic assessment rather than just checking for uppercase letters.

How to use Password Strength

1. 1Type a password into the input field — the strength meter updates in real-time
2. 2View the estimated crack time for different attack scenarios (offline fast hash, online throttled)
3. 3Read the specific warnings about what makes the password weak (common words, patterns, repeated characters)
4. 4Click Suggestions to see specific improvements recommended for your password

Frequently asked questions