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Password Generator

Generate ultra-strong, cryptographically secure random passwords with customizable symbols and length.

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Fast, secure & processed 100% locally in your browser

About This Password Generator

This free secure password generator creates strong, random passwords and passphrases directly in your browser using the Web Crypto API — the same cryptographically secure random source trusted by modern security software. Every password is generated locally on your device with true cryptographic randomness (crypto.getRandomValues), never Math.random.

With options for custom length up to 64 characters, character sets, ambiguity exclusion, memorable passphrases, and numeric PINs, it supports all use cases from creating secure passwords for new accounts to generating master passwords for password managers.

How to Use the Password Generator

  1. Pick a generation mode — Random for traditional secure passwords, Passphrase for memorable word phrases, or PIN for numeric codes.
  2. Adjust the length slider (16 characters is recommended for modern security standards).
  3. Toggle the character sets (uppercase, lowercase, numbers, symbols) you wish to include.
  4. Click "Generate Password" — your password is created instantly with live entropy and strength rating.
  5. Click the copy icon to copy it to your clipboard, or use the Bulk Generator to create multiple passwords at once.

Key Features

  • Cryptographically Secure: Uses window.crypto.getRandomValues() for true randomness, not pseudorandom numbers.
  • Three Modes in One: Classic random passwords, dictionary-backed memorable passphrases, and sequential-safe PINs.
  • Entropy & Crack Time: Live calculation of bit entropy and realistic brute-force estimates across online and GPU attacks.
  • Bulk Generation: Generate batches of 5, 10, 25, or 50 passwords with one-click export.
  • Instant Export & Print: Download formatted TXT files or print your passwords directly from your browser.
  • 100% Private & In-Browser: Zero network requests — nothing is stored, tracked, or sent to any server.

Frequently Asked Questions

How long should my password be?

For everyday accounts, 16 characters using mixed case, numbers, and symbols provides excellent security. For critical accounts like primary email, banking, or password managers, 20–24 characters is ideal.

Is it safe to use an online password generator?

Yes, when it runs 100% in your browser using client-side JavaScript. This tool uses only local Web APIs — no passwords or settings are ever transmitted or saved.

What is a passphrase and why should I use one?

A passphrase combines multiple random dictionary words (e.g. Crystal-Falcon-Nebula-74). Because it is long yet easy to remember, it is perfect for master passwords.

How are the crack-time estimates calculated?

Crack times are calculated based on total entropy and combinations against standard threat models: throttled online attacks (1,000/sec), high-speed offline attacks (10B/sec), and massive GPU clusters (100T/sec).

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