Password Generator – Strong Random Passwords Offline

Free secure password generator in your browser. Customize length, symbols, and ambiguous characters — crypto-random, never uploaded.

Private: calculation runs only in your browser.

Security Utility

Password Generator

Create a strong random password offline in your browser. Uses crypto.getRandomValues — never sent to a server.

Generated password

Click Generate to create a password

Estimated strengthVery strong

Character set size88

Generated locally with the Web Crypto API. ToolMars never stores or transmits your password. Store it in a password manager — do not reuse across sites.

Related tools

All tools

Slug Generator QR Code Designer Word & Text Counter

What Is a Password Generator?

A password generator creates long, random strings from letters, numbers, and symbols so you do not rely on guessable words or reused logins. Strong passwords are long and unpredictable.

FAQ

How long should a password be?

Aim for 16+ characters with a mixed charset for most accounts; longer is better for high-value logins.

Is this password generator safe?

Yes for privacy — generation is client-side only. Still store passwords in a manager and enable 2FA where possible.