Password Reuse Risk Estimator
Estimate password reuse risk from a list of passwords or hashes.
Password Reuse Risk Estimator
Estimate how often passwords repeat in a list to measure reuse risk. Security teams use this to analyze sample sets and improve policy guidance.
How to use the Password Reuse Risk Estimator
- Paste the list of passwords or hashes.
- Click Estimate.
- Review the reuse rate and risk level.
Common use cases
- Auditing password policy effectiveness.
- Reviewing sample datasets during training.
- Checking for repeated values in exports.
- Summarizing risk for reporting.
Tips & notes
- Remove empty lines to avoid skewed counts.
- Use sanitized datasets when possible.
- Pair this with minimum length and complexity checks.
Related security tools
- Password Policy Strength Tester
- Token Entropy Analyzer
- Secrets Exposure Scanner
FAQ
What is reuse rate?
The fraction of passwords that are duplicates.
Is this secure?
Yes. The tool does not transmit or store input.
Can I use hashed passwords?
Yes. It treats each line as a value and checks duplicates.