Free Password Generator — Instant, Secure, No App Required

This tool creates strong, secure passwords directly in your browser using the cryptographically secure crypto.getRandomValues() API. Nothing is transmitted to any server. Customize length, character types, and symbols — or use a preset for instant results. Generate up to 1,000 passwords at once and download them as a text file.

What Makes a Password Strong? (2026 Edition)

Length is the most important factor

NIST guidelines (SP 800-63B) recommend prioritizing length above all else. Aim for at least 12 characters; 16+ is ideal. Each additional character multiplies the search space by the character set size (26–94×).

Character variety

Using all four character types (lowercase, uppercase, digits, symbols) expands the character set to 94 symbols and maximizes entropy. Adding just one symbol category can multiply crack time by 10× or more.

Avoid dictionary patterns

Common words, names, dates, and keyboard patterns (qwerty, asdf) are the first things attackers try. Use a random generator to eliminate this risk entirely.

Never reuse passwords

A single breach can expose all accounts that share the same password (credential stuffing). Use a unique password for every service.

Frequently Asked Questions

How many characters should my password be?

At least 12 characters; 16+ is strongly recommended. Our default setting (16 chars, all types) requires hundreds of millions of years to crack at 10 billion guesses per second.

Is this tool safe to use?

Yes. All generation uses the browser's crypto.getRandomValues() API, which produces cryptographically secure random numbers. No passwords are ever sent over the network.

What is a passphrase?

A passphrase combines multiple words (e.g. Cloud-River-Stone-Fire) into a long, memorable password. With 4+ words it achieves 50+ bits of entropy — comparable to a random 10-character password with all character types.

Should I use symbols?

Symbols significantly increase entropy, but some services don't accept certain symbols. Use the symbol picker to choose only compatible ones.

What does "exclude ambiguous characters" mean?

Characters like 0 and O, or 1, I, and l look identical in many fonts. Enabling this option removes them, making passwords easier to read and type manually.