Password Generator
Create secure, random passwords with customizable options and strength indicators.
A Secure Random Password Generator is an air-gapped credential creation utility that produces high-entropy passwords, cryptographically secure passphrases, and randomized alphanumeric tokens. Powered by the browser's native crypto.getRandomValues() API, it guarantees true uniform randomness free from the deterministic biases of standard pseudo-random functions. Users can customize character set rules, including uppercase letters (A-Z), lowercase letters (a-z), numeric digits (0-9), and ambiguous or special punctuation symbols, while evaluating password strength using NIST SP 800-63B guidelines and Shannon entropy bit calculations. System administrators, developers, and security-conscious individuals use this tool to create uncrackable database passwords, API authentication tokens, SSH passphrases, and master account credentials. Operating 100% client-side with zero server storage, your generated passwords exist only in local memory and are never transmitted across the network, ensuring complete credential privacy.
Click generate to create a password
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Systems & Security Engineers • Applied Cryptography & High-Performance Web Tools
How to Use Password Generator
Set password length
Use the slider to choose how many characters you want (8-128).
Choose character types
Select uppercase, lowercase, numbers, and/or symbols.
Generate & copy
Click Generate, then copy your secure password.
Practical Examples & Conversions
Length: 16, all options
Xk9#mP2$vL5@nQ8
Frequently Asked Questions (PAA)
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Authoritative Standards & Citations
Calculations and algorithms on this page are implemented and verified in strict accordance with the following official technical specifications:
RFC 6238: TOTP: Time-Based One-Time Password Algorithm
Extension of the HMAC-based One-Time Password algorithm HOTP to support time-based moving factors.
NIST Special Publication 800-38D: Galois/Counter Mode (GCM)
Recommendation for block cipher modes of operation: Galois/Counter Mode (GCM) and GMAC.