How Long Does It Take to Crack a Password?
Hackers don't guess passwords one at a time. Modern cracking hardware can test billions of combinations per second. Here's what that means for your passwords — and how to protect yourself.
The Honest Answer: It Depends on Length and Complexity
The two biggest factors in how long a password takes to crack are its length and the variety of characters used. A short password made of only lowercase letters can be cracked almost instantly. A 16-character password mixing letters, numbers, and symbols could take longer than the age of the universe.
| Password | Character Types | Time to Crack |
|---|---|---|
| dog | Lowercase only | Instantly |
| password | Lowercase only | Instantly |
| P@ssword1 | Mixed | ~3 minutes |
| kX9#mLqr | Mixed (8 chars) | ~7 hours |
| Tr0ub4dor&3 | Mixed (11 chars) | ~3 years |
| correct-horse-42! | Mixed passphrase | Centuries |
| kX9#mLqrTp2&vNwQ | Mixed (16 chars) | Billions of years |
These estimates assume a modern GPU-based attack running roughly 10 billion guesses per second — typical for a motivated attacker with consumer hardware.
Try It Yourself — Live Crack Time Calculator
Why Short Passwords Are So Dangerous
Each character you add to a password doesn't just add a little security — it multiplies it. An 8-character password using all character types has about 6.6 quadrillion combinations. A 12-character password has over 475 quintillion. The difference is staggering.
The lesson: length matters more than complexity. A 16-character password made of only lowercase letters is harder to crack than an 8-character password with every character type.
Dictionary Attacks Are the Real Threat
Brute force (trying every combination) isn't actually how most passwords get cracked. Dictionary attacks — using lists of known passwords, common words, and leaked passwords — are far more effective. Passwords like Summer2024! or P@ssword1 look complex but appear in every serious cracking dictionary.
This is why randomly generated passwords are so much safer than ones you come up with yourself. Human brains are predictable. Our password generator uses cryptographic randomness — no patterns, no predictability.
The Bottom Line
Use a password of at least 16 characters generated randomly, or a passphrase of 4+ random words with a number and special character mixed in. Store everything in a password manager so you only need to remember one master password.