Password Requirements Checker

Test custom minimum/maximum length and optional lowercase, uppercase, digit, symbol, or whitespace rules without transmitting the password.

Password to check

Minimum length

Maximum length (0 = none)

Character rules

Whitespace

—Type a password

Sensitive values stay in this browser page. Theoretical entropy/search-space math assumes uniform random generation and is not a crack-time promise for human-chosen passwords. Use a reputable password manager for real account storage.

How to use this Password Requirements Checker

Check a password locally against custom length and character requirements. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.