Password Crack Time Calculator
Find out how long it would take to crack your password with brute force. Free calculator with realistic time estimates.
Ever wondered how long a hacker would need to crack your password? Our crack time calculator estimates the time required for a brute-force attack based on your password entropy and modern computing power. We assume an attack rate of 10 billion guesses per second, which represents a well-resourced attacker using GPU clusters. The results range from instant for weak passwords to centuries or more for strong ones. This tool provides a tangible, easy-to-understand metric that helps you gauge whether your password provides adequate protection for your needs.
How to Use This Tool
- 1. Type your password into the input field
- 2. The crack time is calculated automatically in real-time
- 3. View the estimated time displayed prominently
- 4. Compare with the strength rating for context
- 5. Strengthen your password until crack time exceeds years
Why Use This Tool
- Tangible time-based security metric
- Based on realistic 10 billion guesses/second rate
- Instant calculation with no waiting
- Helps non-technical users understand password security
- Motivates stronger password creation
Frequently Asked Questions
How is crack time calculated?
We calculate total possible combinations (pool_size ^ length) and divide by 10 billion guesses per second to estimate the time needed for a brute-force attack.
Is this the actual time a hacker would need?
It is an estimate for brute-force attacks. Dictionary attacks on common passwords can be much faster. Unique, random passwords are best represented by this estimate.
What attack speed do you assume?
We assume 10 billion (10^10) guesses per second, representing a powerful GPU cluster attacking a fast hash like MD5. Slower hashes like bcrypt would take much longer.
What crack time should I aim for?
Aim for at least thousands of years. Passwords with 60+ bits of entropy typically achieve this threshold.