Is it safe to generate passwords here?

Yes. Our tool uses client-side JavaScript, meaning the password is created on your device and never sent to our servers.

What is password entropy?

A measure of how difficult a password is to crack via brute force. More than 60 bits is generally considered strong.

Why exclude ambiguous characters?

Characters like O and 0, or I and l, can be hard to tell apart. Excluding them prevents login errors.

WHOLE

CALCULATOR

Secure Password Generator

Strength

Very Weak

Entropy

0.0 bits

Security Meter

Password Length: 12

Random Password Generator: Create Secure and Strong Passwords

Our Random Password Generator helps you create highly secure, cryptographically strong passwords to protect your online accounts. To ensure maximum safety, all passwords are generated 100% locally in your browser and are never sent over the internet.

Security experts recommend using unique, complex passwords for every account. This tool allows you to customize length and include uppercase letters, lowercase letters, numbers, and symbols to meet any website's security requirements.

We also calculate Password Entropy, a mathematical measure of how difficult your password is to guess via brute-force attacks. Higher entropy means a more resilient password.

What Makes a Password Strong?

A strong password is one that is difficult for both humans to guess and for computers to discover through 'brute-force' (trying every combination) or 'dictionary attacks'.

The three main factors for strength are Length (longer is exponentially better), Complexity (using multiple character types), and Unpredictability (avoiding names, birthdays, or common words).

Password Entropy (measured in bits) quantifies this strength. Every bit of entropy doubles the number of guesses required to crack the password. A password with 60 bits of entropy or more is generally considered strong.

Best Practices for Password Security

Step 1: Use a Password Manager: Don't try to remember 50 complex passwords. Use a tool like Bitwarden, LastPass, or 1Password to store the strong passwords generated here.
Step 2: Enable 2FA: Even the strongest password can be stolen through phishing. Always enable Two-Factor Authentication (2FA) for an extra layer of security.
Step 3: Unique for Every Site: Never reuse a password. If one site is breached, attackers will immediately try that same password on your email, bank, and social media.
Step 4: Avoid Personal Info: Never include your name, pet's name, or birth year in a password. This information is often public and easy for hackers to find.

Using Our Generator Features

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Exclude Ambiguous
Turn this on to avoid characters that look similar, like 'i', 'I', 'l', 'L', '1', 'o', 'O', and '0'. This prevents login mistakes.
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Custom Length
While 8 characters is often the minimum, 12 to 16 characters is the modern standard for high security.
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Local Generation
Since this tool runs entirely on your device (Client-Side), your generated passwords remain private and secure.