Password Strength Calculator
Analyze password strength, check security criteria, and generate strong passwords for better cybersecurity protection.
Password Generator
Password Strength Analysis
Security Criteria:
- Minimum length (8+ characters)
- Contains uppercase letters
- Contains lowercase letters
- Contains numbers
- Contains special characters
Password Analysis:
Security Recommendations:
About
Our Password Strength Calculator evaluates password security using industry-standard criteria, entropy calculations, and common vulnerability checks to help create stronger passwords.
Why Choose
Advanced analysis including entropy scoring, crack time estimation, common password detection, and real-time strength visualization for comprehensive password security assessment.
Features
Real-time password analysis, customizable security policies, secure password generation, entropy calculations, and detailed security recommendations for optimal protection.
Benefits
Improve cybersecurity posture, prevent data breaches, meet compliance requirements, educate users on password best practices, and generate cryptographically secure passwords.
Enter Your Password
Type your password into the secure input field. Analysis is performed locally in your browser without sending data to external servers.
Real-time Analysis
Our algorithm evaluates password strength using multiple criteria including length, character variety, entropy, and common password databases.
Review & Improve
Get detailed feedback, security recommendations, and use our password generator to create stronger passwords that meet security best practices.
Frequently Asked Questions - Password Strength Calculator
A strong password typically has 12+ characters, uses a mix of uppercase and lowercase letters, numbers, and special characters. It should avoid common words, personal information, and predictable patterns. Higher entropy (randomness) and uniqueness for each account are crucial for security.
Entropy measures password unpredictability in bits. It's calculated using the formula: log2(character_set_size^password_length). For example, a 12-character password using all 94 printable ASCII characters has ~79 bits of entropy. Higher entropy means exponentially more time required to crack the password.
Yes, your password is completely safe. All analysis is performed locally in your browser using JavaScript. No passwords are transmitted to external servers or stored anywhere. The tool works entirely offline once loaded, ensuring complete privacy and security.
Online attacks attempt to guess passwords through login forms and are limited by rate limiting and account lockouts. Offline attacks occur when attackers have access to password hashes and can attempt billions of guesses per second. Our crack time estimates assume offline attacks, representing worst-case scenarios.
Our password generator uses cryptographically secure random number generation to create strong passwords. However, for maximum security, consider using dedicated password managers like Bitwarden, 1Password, or LastPass, which offer additional features like secure storage, auto-fill, and breach monitoring.