← All Tools
⚙️

パスワード強度チェック

パスワードの強度をチェックし、セキュリティのアドバイスを提供。

Features

  • Instantly evaluate password strength with visual indicators.
  • Estimate time required to crack your password using advanced algorithms.
  • Receive personalized recommendations for creating stronger passwords.
  • Check multiple passwords simultaneously for efficient security auditing.
  • Get real-time feedback as you type to build secure passwords on the fly.

How to Use

  1. Enter your password into the input field on the main page.
  2. View your password strength rating and estimated crack time instantly.
  3. Review the specific recommendations displayed to improve your password security.
  4. Modify your password based on the feedback and recheck until you achieve maximum strength.

Frequently Asked Questions

How does the password strength checker work?

Our tool analyzes your password based on length, character variety, and common patterns to estimate its strength and potential vulnerability to brute-force attacks.

Is my password stored when I use this tool?

No, we process your password locally in your browser and never transmit or store it on our servers for maximum security.

What makes a password strong?

A strong password should be at least 12 characters long, include a mix of uppercase letters, lowercase letters, numbers, and symbols, and avoid common words or patterns.

Can this tool check my existing passwords?

Yes, you can test any password you currently use to determine if it needs to be updated for better security.

How accurate is the crack time estimation?

Our estimates are based on modern computing power and common cracking techniques, providing a realistic approximation of how long your password might resist attack attempts.