Password Generator
Generate strong, secure passwords with customizable options
What is the Password Generator?
Written and maintained by the BitConvert team · Feb 27, 2026
The Password Generator builds strong, random passwords using your browser's Web Crypto API (crypto.getRandomValues), which draws on the operating system's cryptographically secure entropy source rather than the predictable Math.random(). You control the length (up to 64 characters) and which character sets are included: uppercase letters, lowercase letters, digits, and symbols. Each toggle expands the pool of possible characters, which directly increases entropy and makes brute-force guessing exponentially harder.
Enabling all four sets gives you a 94-character alphabet, so every character adds roughly 6.5 bits of entropy: a 16-character password then carries around 105 bits, far beyond what current hardware can crack. A live strength meter rates each result from Weak to Very Strong so you can see the effect of your choices immediately. Nothing is transmitted or logged; the password exists only in your browser tab.
Key Features
Configurable Character Sets
Independently toggle uppercase, lowercase, numbers, and symbols to satisfy any site or corporate password policy.
Adjustable Length
Set any length up to 64 characters; longer passwords raise entropy and dramatically increase resistance to brute-force attacks.
True Randomness
Generation relies on the Web Crypto API's cryptographically secure random number generator, not predictable pseudo-random functions.
Live Strength Meter
An instant indicator rates each password from Weak to Very Strong based on its length and character variety.
Common Use Cases
Create a unique password for every account so one breach can't unlock the others, then store them in a password manager. Meet strict enterprise rules that demand mixed case, digits, and symbols at a minimum length. Spin up throwaway credentials for test users, seed data, or CI secrets during development. Generate secure Wi-Fi passphrases or database passwords that no one could guess or find in a wordlist.
Frequently Asked Questions
Last updated: Feb 27, 2026