# Password Strength Meter

> Evaluate the security level of your passwords with entropy analysis and pattern checking.

**Category:** Auth
**Keywords:** password, security, strength, entropy, lock, score, safe, privacy, evaluation, checker
**URL:** https://complete.tools/password-strength

## How it works

The tool uses a scoring algorithm that combines several factors: the length of the password, the variety of character types used (uppercase, lowercase, digits, special symbols), and common patterns or sequences. Each factor is assigned a weight, and the total score is derived from the sum of these weighted values. For example, a password may gain points for each character type included and lose points for sequences like '123' or 'abc'. The final score categorizes the password as weak, moderate, or strong based on predefined thresholds.

## Who should use this

Software developers creating secure applications that require user authentication, cybersecurity analysts assessing the strength of user passwords during security audits, and individuals managing sensitive data who need to ensure their personal accounts are protected with robust passwords.

## Worked examples

Example 1: Assessing the password 'P@ssw0rd123'. This password consists of 12 characters, including uppercase (P), lowercase (asswrd), numbers (0, 1, 2, 3), and a special character (@). It scores well for length and character diversity but contains a common word pattern, reducing its overall strength. The tool might rate this password as moderate. 

Example 2: Evaluating 'Gd8!kLq2#x'. This password is 12 characters long with varied character types: 2 uppercase (G, L), 8 lowercase (d, k, q, x), 2 numbers (8, 2), and 2 special characters (!, #). It avoids common patterns and is complex, likely earning a strong rating. 

Example 3: Checking '12345'. This password is 5 characters long and only consists of numbers. It lacks character diversity and is easily guessable, resulting in a weak rating.

## Limitations

The Password Strength tool may have limitations in accurately assessing passwords that use uncommon language or non-standard character sets, leading to potential underestimation of strength. It may also struggle with very short passwords that include high variability but are still inherently weak due to their length. Additionally, the tool assumes standard dictionary words without recognizing specific jargon or phrases, which could skew results for specialized fields. Finally, passwords that incorporate multi-language characters might not be evaluated correctly, affecting the overall strength assessment.

## FAQs

**Q:** How does the tool handle special characters in passwords?


**A:** The tool evaluates special characters by counting their occurrences and assessing their contribution to overall character diversity, which is crucial for determining password strength.


**Q:** Can the tool assess passphrases, and if so, how?


**A:** Yes, the tool can evaluate passphrases by analyzing their length and character variety; however, it may score lower if the passphrase contains common dictionary words or phrases. 


**Q:** What impact do common password patterns have on scoring?


**A:** Common patterns, such as sequential numbers or easily guessable words, negatively affect the score, as they increase susceptibility to attacks. The algorithm penalizes these patterns to encourage more unique passwords.


**Q:** Is there a maximum length for passwords assessed by the tool?


**A:** The tool typically accommodates passwords up to 128 characters; however, beyond a certain length, additional complexity may not significantly enhance the score, as most attacks focus on shorter passwords.

---

*Generated from [complete.tools/password-strength](https://complete.tools/password-strength)*