Password Generator
Generate secure random passwords with customizable length and character sets.
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Everything you need to know
Cryptographically Secure
This generator uses the Web Crypto API (crypto.getRandomValues) — the same cryptographic random number generator used by password managers and security software. Passwords are generated in your browser.
Customize Everything
Control password length (4–64 characters), toggle lowercase, uppercase, digits, and symbols independently, and optionally exclude ambiguous characters (I, l, O, 0, 1) that look similar in some fonts. Generate up to 10 passwords at once.
Strength Meter & Entropy
Each password shows a strength rating (Weak → Very Strong) based on length and character diversity, plus the estimated bits of entropy. A 16-character password with all character types has ~100+ bits of entropy — practically uncrackable by brute force.
Password Security Tips
- Never reuse passwords across different sites. A breach on one site compromises all accounts sharing that password.
- Use a password manager (Bitwarden, 1Password, KeePass) to store generated passwords securely.
- Enable 2FA/MFA wherever possible — even a strong password can be phished.
- Avoid patterns — "Password1!", "Qwerty123", and "Summer2024!" are all trivially crackable.
- Longer beats complex — a 20-character lowercase password is stronger than an 8-character one with symbols.
Related Tools
Converting text to ASCII codes? Use the ASCII Converter. Need number base conversions? Try the Number Base Converter. For data size calculations, see the Data Converter.