Password Generator & Strength Checker
Generate cryptographically secure passwords or easy-to-remember passphrases. Customize length, character types, and check the strength of any password.
Check Any Password
How It Works
- Adjust the length slider and toggle character types (lowercase, uppercase, digits, symbols).
- Or switch to passphrase mode for memorable multi-word passwords.
- Click the refresh button to generate a new password instantly.
- Use the strength checker to test any existing password.
Why Strong Passwords Matter
Weak passwords remain one of the leading causes of data breaches. According to security research, over 80% of hacking-related breaches involve compromised or reused passwords. A strong, unique password is your first and most important line of defense against unauthorized access to your accounts.
A truly strong password should be at least 12 characters long and include a mix of uppercase letters, lowercase letters, numbers, and special symbols. Avoid using dictionary words, personal information like birthdays or pet names, or common patterns like "123456" or "password." Each of your accounts should have its own unique password so that a breach of one service does not compromise your other accounts.
Passphrases offer an excellent alternative to traditional passwords. A passphrase combines multiple random words into a single string that is both long and memorable. For example, "correct-horse-battery-staple" is significantly harder to crack than a short, complex password like "P@ss1" because its length creates an enormous number of possible combinations for attackers to try.
Tips & Best Practices
- ✓Use a unique password for every account. Never reuse passwords across services.
- ✓Enable two-factor authentication (2FA) wherever possible for an extra layer of security.
- ✓Consider using a passphrase for accounts you type frequently. They are easier to remember and harder to brute-force.
- ✓Change passwords immediately if you learn a service you use has been breached.
- ✓Never share passwords via email or text message. Use a secure method instead.
- ✓Aim for at least 16 characters. Longer passwords are exponentially harder to crack.
Frequently Asked Questions
How does this password generator work?
Our generator uses your browser's built-in cryptographic random number generator (crypto.getRandomValues) to produce truly random characters. Your password is created entirely on your device and is never sent to any server. This ensures maximum security and privacy.
What makes a password "strong"?
Password strength depends on length, character variety, and randomness. Our strength meter evaluates entropy (the mathematical measure of unpredictability) by considering the total number of possible character combinations. A password rated "Strong" would take centuries to crack with current computing technology.
Is a passphrase more secure than a regular password?
A passphrase of 4 or more random words is generally more secure than a short complex password because its total length creates enormous entropy. A 4-word passphrase drawn from a dictionary of 7,776 words has over 3.6 trillion possible combinations, and it is much easier to remember than a random string of characters.
Should I use a password manager?
Yes. A reputable password manager stores all your unique passwords securely behind one master password. This lets you use long, random, unique passwords for every account without having to remember each one individually. Major options include Bitwarden (free), 1Password, and Dashlane.