Password Strength Checker

A strong password is at least 12 characters long and includes a mix of uppercase letters, lowercase letters, numbers, and special characters. Avoid using dictionary words, personal information, or common patterns.

Your password is processed locally and not stored. However, for maximum security, we recommend using a password manager to generate and check passwords rather than typing real passwords anywhere online.

Crack time estimates how long it might take an attacker to guess your password using brute force methods. This assumes they can make billions of guesses per second with modern hardware. Real-world attacks may be faster or slower.

Yes, password managers are highly recommended. They generate truly random, unique passwords for each account and store them securely. This is more secure than reusing passwords or using simple patterns.

The strength calculation estimates security based on entropy (randomness) and common password patterns. It checks length, character variety, dictionary words, common substitutions, and sequential patterns. While useful as a guide, real-world security also depends on the target system's security measures and attack methods.

Avoid using personal information (names, birthdays), dictionary words, common substitutions (P@ssw0rd), keyboard patterns (qwerty), sequential numbers (12345), reusing passwords across accounts, and passwords shorter than 12 characters. Also avoid common passwords like 'password123' or 'admin'.

Minimum 12 characters for general accounts, 16+ characters for sensitive accounts (email, banking, work). Longer passwords are exponentially harder to crack. A 16-character password with mixed characters would take billions of years to crack with current technology, while an 8-character password might take hours.

Yes, passphrases (4-6 random words) are often stronger and easier to remember than complex passwords. 'correct horse battery staple' is stronger than 'P@ssw0rd1' and more memorable. Ensure words are random and unrelated, not common phrases or song lyrics.

Modern security guidance recommends changing passwords only when compromised, not on a schedule. Regular forced changes often lead to weaker passwords or minor variations. Instead, use unique strong passwords for each account, enable two-factor authentication, and change passwords immediately if a breach occurs.