What Makes a Strong Password? 2025 Guide

Passwords are the first line of defense for your online accounts — yet most people still use ones hackers crack in seconds.

Worst Passwords (Avoid Completely)

• 123456, password, qwerty — cracked instantly
• Your name + birth year (e.g. somchai1990) — guessable from social media
• Reusing passwords across sites — one leak = everything leaked

What a Good Password Looks Like

• 12+ characters — length matters more than complexity
• Mix of upper/lowercase + numbers + symbols
• Not a dictionary word (use a passphrase: a long memorable sentence)
• Different per site (use a password manager)

Check Your Strength

Try our Password Strength Checker — analyzes entropy and estimates crack time. Free, runs in your browser, your password never leaves your device.

Forget Everything — Use a Password Manager

Bitwarden / 1Password / Google Password Manager — remember complex passwords for you; you only memorize one master password.