ToolBrainy

Password Generator

Generate strong, random passwords instantly. Choose length and character types.

16
4128

About this tool

Password Generator creates secure, random passwords right in your browser. Choose your desired length (4–128 characters) and pick which character sets to include. Passwords are generated using your browser's built-in randomness, so nothing is ever sent to a server. Use it for account signups, Wi-Fi passwords, API keys, and anything else that needs a strong secret.

How to use

1
Set your options

Drag the slider to choose length and tick which character types to include.

2
Generate

Click "Generate Password" to get a fresh random password instantly.

3
Copy or download

Copy the password to your clipboard or download a .txt file for safe keeping.

Why use it

Truly random

Uses the browser's crypto random engine, not predictable Math.random sequences.

Private by design

Everything runs in your browser. Your passwords never leave your device.

Strength meter

See instantly if your password is Weak, Fair, Good or Strong.

Fully customisable

Control length, character sets and ambiguous-character exclusion.

Use cases

Account signups

Create a unique, strong password every time you register on a new site.

Wi-Fi passwords

Generate a memorable-length key that still meets router security requirements.

API keys and tokens

Quickly produce a high-entropy secret for development projects.

Password manager seeding

Fill your password manager with fresh, unique passwords for every account.

Database credentials

Secure your MySQL, Postgres and Redis instances with long random secrets.

Encryption keys

Seed AES or GPG keys with high-entropy passwords generated here.

Frequently asked questions

Is the password generator free to use?

Yes, completely free. No signup, no limit on how many passwords you generate, and no watermarks.

How long should my password be?

Security experts recommend at least 16 characters for most accounts, and 20 or more for highly sensitive ones such as banking or email.

What are ambiguous characters?

Characters that look similar in certain fonts: zero and the letter O, lowercase L and the digit 1, and uppercase I. Excluding them makes passwords easier to read aloud or copy by hand.

Can I trust this generator?

Yes. Passwords are built using the browser's crypto.getRandomValues API, which provides cryptographically secure randomness. Nothing is logged or transmitted.

Should I use symbols in my password?

Yes, if the site allows them. Symbols dramatically increase entropy and make brute-force attacks far less practical. Check the site's allowed character list first.