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Password generator

Generate random (or seeded, deterministic) passwords with configurable character sets.

Enter Length, Lowercase (a–z), Uppercase (A–Z), Numbers (0–9), Symbols (!@#$…), Avoid ambiguous characters, and Seed (optional) to calculate Password and Entropy (bits). Results update instantly as you type. Try an example preset to sanity-check the tool.

Inputs

Number of characters to generate.
Remove characters like 0/O/o and 1/I/l that are easy to confuse.
If provided, output becomes deterministic (useful for tests and reproducible examples).
Examples
About this tool
  • Inputs: Length, Lowercase (a–z), Uppercase (A–Z), Numbers (0–9), Symbols (!@#$…), Avoid ambiguous characters, Seed (optional)
  • Outputs: Password, Entropy (bits)
References
  • Password strength and entropy estimation
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