Password Generator
Create strong, random passwords tuned to any site policy. Set the length, toggle uppercase, lowercase, digits and symbols, optionally drop look-alike characters, and get an instant password with entropy bits, strength rating and estimated crack times for common attack scenarios.
TheCalculators — Password Generator
Printed thecalculators.com
Generated Password
}Mcu+w=EEC@7E#Xv
16 chars · 103 bits entropy · Excellent
- Length
- 16
- Character Classes
- 4 of 4
- Pool Size
- 87 characters
- Entropy
- 103.1 bits
- Strength
- Excellent
- Offline Crack Estimate
- 1.7 trillion years
- Ambiguous Excluded
- No
Password strength (entropy bits)
103.1 bits
Excellent
Estimated time to crack (average half the keyspace)
Generated with JavaScript Math.random — strong for everyday accounts, but for high-value credentials use a password manager with a CSPRNG. The password re-rolls every time an input changes; copy it before editing.
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Formula
Entropy (bits) = length × log2(pool size) · average crack time = 2^(entropy−1) ÷ guesses per second
Pro tips
- • 16 characters over all four classes is the practical sweet spot for strength and memorability.
- • Adding length beats adding symbols: one extra character multiplies the keyspace by the pool size.
FAQ
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