Password Generator

Generate strong, secure passwords with customizable options. Includes real-time strength meter, entropy calculation, and passphrase generator mode.

Password Strength

Strength

Generate

Entropy0 bits
Crack Time-
Length0

Your Password

Click generate
464

Generate up to 10 passwords at once

Security Tips

  • Use a unique password for every account
  • Store passwords in a password manager (Bitwarden, 1Password)
  • Enable two-factor authentication (2FA) where available
  • Longer passwords are more secure than complex short ones
  • Change passwords immediately if a service reports a breach

Password Strength

Strength

Generate

Entropy0 bits
Crack Time-

Quick Answer

Generate secure passwords instantly with customizable length (4-128 characters), character types (uppercase, lowercase, numbers, symbols), and strength analysis. Passwords are created using cryptographic randomness. A 16-character password with all character types takes billions of years to crack.

Key Facts

  • Cryptographically secure random generation
  • Password length from 4 to 128 characters
  • Include/exclude uppercase, lowercase, numbers, symbols
  • Exclude ambiguous characters (I, l, 1, O, 0)
  • Real-time strength meter and entropy calculation
  • Crack time estimation based on 10B guesses/second
  • Passphrase mode with random words
  • Generate multiple passwords at once

Frequently Asked Questions

A strong password is at least 12-16 characters long, uses a mix of uppercase, lowercase, numbers, and symbols, avoids common words or patterns, and is unique for each account. Length matters more than complexity.
Entropy measures password randomness in bits. Formula: log2(charset_size^length). A 12-character password using 95 characters has ~79 bits of entropy. 80+ bits is considered strong.
We estimate based on 10 billion password guesses per second (high-end attack). Time = (possible combinations / guesses per second) / 2. The actual time depends on the attacker's resources.
Passphrases (4-6 random words) are easier to remember and can be just as secure as random passwords if long enough. A 5-word passphrase has about 64 bits of entropy, similar to an 11-character random password.
Absolutely! Password managers let you use unique, strong passwords for every account without memorizing them. They're more secure than reusing passwords. Popular options: Bitwarden, 1Password, LastPass.