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PassGuard
Type a password — see an entropy-based strength score, character set used, and a rough offline crack-time.
A 16-character lowercase phrase beats an 8-character random soup with symbols. Length adds bits of entropy exponentially; character variety adds them linearly.
Estimated against a fast offline GPU attack (~10¹⁰ guesses/sec). Never enter real passwords on untrusted sites — this runs in your browser, but make it a habit.
What you entered
Character set size from what's used
lowercase + uppercase + digits + symbols detected= 0 possible charactersEntropy = length × log2(charset size)
0 × log2(1)= 0.0 bitsGuesses to try half the keyspace
2^0.0 ÷ 2= 5.00e-1 guessesTime at ~10¹⁰ guesses/sec (fast offline GPU)
guesses ÷ 10,000,000,000= InstantResult
Estimated crack time: Instant
With 0 possible characters across 0 characters, this password has 0.0 bits of entropy — rated "Very weak," with an estimated offline crack time of Instant.