Password Generator

Generate strong, secure random passwords with customizable options

Random Password Generator

Password Settings

4 - 128 characters

Character Types

A-Z
a-z
0-9
!@#$%^&*

Additional Options

i, l, 1, L, o, 0, O
{ } [ ] ( ) / \\ ' " ` ~

Password Strength

Entropy: -
Possible Combinations: -
Time to Crack: -
Character Set Size: -

About Password Generator

Our password generator creates strong, random passwords that are nearly impossible to crack. Use it to generate secure passwords for your online accounts, Wi-Fi networks, databases, and any other security needs.

Why Use Strong Passwords?

Weak passwords are the leading cause of security breaches. A strong password protects your accounts from:

  • Brute force attacks (trying all possible combinations)
  • Dictionary attacks (trying common words and phrases)
  • Credential stuffing (using leaked passwords from other sites)
  • Social engineering attacks

Password Strength Guidelines

Strength Entropy Characteristics Crack Time
Very Strong 128+ bits 16+ mixed characters Billions of years
Strong 80-127 bits 12-15 mixed characters Millions of years
Good 60-79 bits 10-11 mixed characters Thousands of years
Fair 40-59 bits 8-9 characters Days to years
Weak <40 bits <8 characters Minutes to hours

Password Best Practices

  • Length: Use at least 12-16 characters for important accounts
  • Uniqueness: Never reuse passwords across different accounts
  • Complexity: Mix uppercase, lowercase, numbers, and symbols
  • Randomness: Avoid personal information, common words, or patterns
  • Storage: Use a password manager to securely store passwords
  • Updates: Change passwords periodically, especially after breaches
  • 2FA: Enable two-factor authentication whenever possible

Understanding Password Entropy

Entropy measures password randomness in bits. Higher entropy means more possible combinations and better security. Entropy is calculated as: log₂(character_set_size ^ password_length)

Example Calculation:

Password: 16 characters
Character set: 95 (uppercase + lowercase + numbers + symbols)
Entropy = log₂(95^16) ≈ 105 bits
Possible combinations: 4.4 × 10³¹
Time to crack: Millions of years

Common Password Mistakes

  • Using personal information (names, birthdays, addresses)
  • Common words or phrases ("password", "welcome", "letmein")
  • Simple patterns ("123456", "qwerty", "abcdef")
  • Short passwords (less than 8 characters)
  • Reusing passwords across multiple accounts
  • Sharing passwords with others
  • Writing passwords on paper or sticky notes

How to Remember Strong Passwords

Since strong passwords are hard to remember, consider these strategies:

  • Password Manager: Use software like LastPass, 1Password, or Bitwarden
  • Passphrase Method: Create memorable phrases with random words
  • Browser Storage: Save passwords in your browser (with master password)
  • Two-Factor Authentication: Reduce password burden with 2FA
Security Note: Never share your passwords via email, text, or phone. Legitimate services will never ask for your password. Always enable two-factor authentication for critical accounts like email, banking, and social media.

Frequently Asked Questions

How long should my password be?

For most accounts, 12-16 characters is recommended. For highly sensitive accounts (banking, email), use 16+ characters. The longer the password, the exponentially harder it is to crack.

Should I use symbols in my passwords?

Yes! Symbols significantly increase the character set size, making passwords much stronger. However, length is more important than complexity - a 16-character password with only letters and numbers is stronger than an 8-character password with all character types.

Is it safe to use a password generator?

Yes, our password generator creates passwords entirely in your browser using cryptographically secure random number generation. No passwords are stored, transmitted, or logged. The generated passwords are immediately available only to you.

How often should I change my passwords?

Change passwords immediately if you suspect a breach. Otherwise, changing passwords every 6-12 months is reasonable for important accounts. However, using strong, unique passwords is more important than frequent changes.

What's the difference between entropy and password strength?

Entropy is a mathematical measure of randomness (in bits), while strength is a practical assessment of how resistant a password is to cracking. Higher entropy generally means stronger passwords, but context matters - a truly random 12-character password has high entropy and is strong, while "password123!" has low entropy despite being 12 characters.

Can I trust this password generator?

Yes. All password generation happens locally in your web browser using JavaScript's cryptographically secure random number generator. We don't store, transmit, or have any access to generated passwords. Once you close or refresh the page, the passwords are gone forever.

Character Set Information

Character Type Characters Count
Uppercase Letters ABCDEFGHIJKLMNOPQRSTUVWXYZ 26
Lowercase Letters abcdefghijklmnopqrstuvwxyz 26
Numbers 0123456789 10
Symbols !@#$%^&*()_+-=[]{}|;:,.<>? 32
All Combined - 94

Password Manager Recommendations

Consider using these trusted password managers to securely store your generated passwords:

  • Bitwarden: Open-source, cross-platform, free tier available
  • 1Password: User-friendly, excellent security features
  • LastPass: Popular choice with free personal plan
  • Dashlane: Includes VPN and dark web monitoring
  • KeePass: Free, open-source, offline storage

Privacy & Security

All password generation is performed entirely in your web browser using JavaScript. We do not collect, store, transmit, or have access to any generated passwords. Your passwords remain completely private and secure on your device. No data is sent to our servers.

Mobile Compatibility

Our password generator is fully responsive and works perfectly on all devices including smartphones, tablets, laptops, and desktop computers. Generate secure passwords anywhere you need them!