What does the strength meter show?

The strength meter calculates entropy — a measure of how many possible combinations an attacker would need to try. Higher entropy means a stronger password. We rate passwords as Weak, Fair, Strong, or Very Strong based on their bit count.

Password Generator

Create strong, secure passwords in one click.

Click Generate to create a password

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Length 16

Uppercase A B C D E F

Lowercase a b c d e f

Numbers 0 1 2 3 4 5

Symbols ! @ # $ % &

Free Secure Password Generator

Our password generator creates strong, random passwords instantly using cryptographically secure randomness. Whether you need a password for a new online account, a master password for a password manager, a WiFi key, or a company login credential, this tool produces results that are effectively uncrackable by brute force. Everything runs in your browser — we never see your password.

Why Use a Password Generator?

Humans are predictable. People tend to choose passwords based on names, dates, or common words — patterns attackers exploit. A generator removes that bias.

Uniqueness matters. Using a different generated password for every account means a breach at one site can't compromise the others.

Length is strength. Every extra character exponentially increases the time needed to crack a password. Aim for 16+ characters for everyday accounts.

Character variety. Mixing uppercase, lowercase, numbers, and symbols maximises the pool of possible characters per position.

How to Generate a Strong Password

Set your desired length using the slider (4–64 characters). We recommend at least 16.

Toggle the character sets you need: Uppercase, Lowercase, Numbers, Symbols.

Watch the strength meter — aim for "Strong" or "Very Strong".

Click Generate to create a new password, or just adjust the sliders to auto-refresh.

Click Copy to copy the result and paste it into your password manager or account form.

How We Measure Password Strength

The strength meter calculates entropy in bits: log₂(pool size) × length. A pool of 95 printable ASCII characters and a length of 16 gives ~104 bits of entropy. At 100 billion guesses per second — more than any current attacker can sustain — that would take longer than the age of the universe to crack. The meter rates passwords as Very Weak, Weak, Fair, Strong, or Very Strong based on bit count.

Technical: How Randomness Works

This tool uses crypto.getRandomValues() — the Web Crypto API — instead of Math.random(). Each character is drawn from your operating system's hardware entropy source (mouse movements, clock jitter, thermal noise). This makes it cryptographically secure: even someone who knows the algorithm cannot predict the output without access to your hardware entropy state. Your generated password is never sent over the network.

🔒 Privacy first. Your password is generated entirely in your browser's RAM. It is never transmitted, stored, logged, or seen by anyone but you. Close the tab and it's gone.

Frequently Asked Questions

Is this password generator secure?

Yes. It uses crypto.getRandomValues() — the Web Crypto API built into every modern browser. The password is generated entirely in your browser. Nothing is sent to any server, stored in any database, or logged anywhere.

How long should my password be?

We recommend at least 16 characters with uppercase, lowercase, numbers, and symbols — roughly 105 bits of entropy. For high-security accounts or master passwords, use 24–32 characters.

Should I use symbols in my password?

Yes, when the site allows it. Symbols expand the character pool from 62 to 95 printable ASCII characters, significantly increasing entropy per character. If a site blocks symbols, compensate by increasing length.

How strong is my password?

Password strength depends on length and character variety. Read our guide on password entropy and strength to understand the math behind secure passwords.

Creating a New Account?

Need a username too? Try our Username Generator to create a unique, memorable username.