Password Strength Checker

How strong is my password? Use our security analyzer to check for entropy, calculate hack time, and ensure your digital life is protected against brute-force attacks.

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Password Strength Checker – Protect Your Digital Identity

In an era where data breaches are common, your password is the primary barrier between hackers and your personal information. Our Password Strength Checker provides an instant, deep-dive analysis of your credentials. Unlike basic meters, this tool calculates password entropy and estimates the actual time a modern computer would take to crack your code using brute-force methods.

How Strong is My Password?

Strength isn't just about length; it's about complexity and unpredictability. A 12-character password like "Password123!" is significantly weaker than a random 12-character string like "4k#mZ9!pL2qR". Our security analyzer looks for character variety, including uppercase letters, lowercase letters, numbers, and special symbols. If you find your current password is too weak, you can use our Password Generator to create a cryptographically secure alternative.

Key Features of Our Security Analyzer

  • Real-time Entropy Calculation: Measure the mathematical randomness of your password in bits.
  • Crack Time Estimation: See how long it takes for a GPU cluster to guess your password.
  • Visual Feedback: A dynamic strength bar that changes color from red (danger) to green (secure).
  • Zero-Server Interaction: Your password never leaves your device. We use client-side JavaScript for 100% privacy.
  • Character Breakdown: A checklist to ensure you've met all modern security standards.

Understanding Password Entropy

Entropy is the gold standard for measuring password security. It represents the number of attempts a hacker would need to exhaust all possibilities. A password with 60 bits of entropy is generally considered strong for most personal accounts, while 100+ bits is recommended for high-security environments. For developers working with sensitive data, tools like our Base64 Encoder can also help in handling data, but nothing replaces a solid master password.

Tips for a Better Password

To achieve a "Very Strong" rating, aim for at least 16 characters. Use a mix of symbols and avoid common dictionary words or personal information like birthdays. Consider using a "passphrase"—a string of unrelated words—which is often easier for humans to remember but incredibly difficult for computers to crack.

Password Security – Frequently Asked Questions

Yes. Our tool is built with a "Privacy First" approach. All calculations happen locally in your browser. No data is sent to SimpliConvert servers. For maximum peace of mind, you can even disconnect your internet after the page loads and the tool will still work.

Generally, a score above 50 bits is okay for low-risk accounts. However, for email, banking, or social media, you should aim for 80 bits or higher. Our tool will highlight your password in green once it reaches a safe threshold.

This usually happens if your password is too short (less than 8 characters) or only uses one type of character (like all lowercase). Modern hacking hardware can try billions of combinations per second, making simple passwords useless.

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