Which algorithm do you use?
This checker follows the original PasswordMeter v1.03 (rev.082707) logic, but we have crafted a revised version tailored to the current password.es design and experience.
Security checker
Analyze your password in depth
Recreates the classic PasswordMeter logic within the password.es design. Enter your password, review the bonuses and detect repetitions, predictable patterns and deductions that weaken your key.
All analysis happens in your browser. We never send information or store the results.
We hide the password by default. You can toggle visibility with the side button.
Status legend: Very weak, Weak, Fair, Strong or Very strong.
0
%
Total score
Very weak
| Additions | Type | Ratio | Count | Bonus | |
|---|---|---|---|---|---|
| Number of characters | Fixed | +(n*4) | 0 | 0 | |
| Uppercase letters | Cond/Incr | +((len-n)*2) | 0 | 0 | |
| Lowercase letters | Cond/Incr | +((len-n)*2) | 0 | 0 | |
| Numbers | Cond | +(n*4) | 0 | 0 | |
| Symbols | Fixed | +(n*6) | 0 | 0 | |
| Middle numbers or symbols | Fixed | +(n*2) | 0 | 0 | |
| Requirements | Fixed | +(n*2) | 0 | 0 | |
| Deductions | |||||
| Letters only | Fixed | -n | 0 | 0 | |
| Numbers only | Fixed | -n | 0 | 0 | |
| Repeated characters (case-insensitive) | Incr | -(n(n-1)) | 0 | 0 | |
| Consecutive uppercase letters | Incr | -(n*2) | 0 | 0 | |
| Consecutive lowercase letters | Incr | -(n*2) | 0 | 0 | |
| Consecutive numbers | Incr | -(n*2) | 0 | 0 | |
| Letter sequences (3+) | Fixed | -(n*3) | 0 | 0 | |
| Number sequences (3+) | Fixed | -(n*3) | 0 | 0 | |
Quick notes: Fixed: constant bonuses or deductions. Incr: adjusted for every occurrence. Cond: depends on an additional factor. n: total number of occurrences. len: total password length. The final score adds every bonus and penalty with a minimum of 0 and a maximum of 100.
Disclaimer
This application is designed to evaluate password strength. Instant visual feedback gives you a way to improve your passwords, with a strong focus on breaking common bad habits in weak compositions. Because there is no official weighting system, we created our own formulas to evaluate overall strength. Note that this application does not rely on the typical “time to crack” estimation. We have found that metric to be limited and unreliable for real-life scenarios. This tool is not perfect or infallible and should be used only as a rough guide to improve your password creation process.
How to read the score
The score follows the Spanish adaptation of PasswordMeter v1.03: every bonus adds points and every bad practice subtracts them. From 80 points we consider the password very strong, but you should still avoid reusing it and rely on a secure manager.
Use a diverse mix of characters and avoid predictable patterns (1234, qwerty, personal dates). If orange warnings appear, review them to reinforce your password.