Password Strength Checker

Test how strong your password is with an instant score, checklist and tips. Runs entirely in your browser.

Strength—
  • •At least 8 characters
  • •Uppercase letters (A–Z)
  • •Lowercase letters (a–z)
  • •Numbers (0–9)
  • •Symbols (!@#$…)

Your password is analyzed locally in your browser and never sent anywhere.

What is a Password Strength Checker?

A password strength checker is a free tool that analyzes your password and shows how resistant it is to guessing or brute-force attacks. The analysis happens locally in your browser.

How to use

  • Open the tool and type your password
  • Watch the strength bar and checklist update in real time
  • Use the suggestions to create a stronger password

Key features

  • Instant real-time scoring
  • Clear visual checklist
  • 100% local analysis — nothing is uploaded
  • Free, no signup required

Frequently Asked Questions

How is the strength calculated?+
The score combines length and character variety: uppercase, lowercase, digits and symbols each add points.
What makes a strong password?+
At least 12 characters, a mix of upper/lowercase letters, digits and symbols, and no common words or personal info.
Is my password sent anywhere?+
No. Everything runs in your browser — your password never leaves your device.
What is a good score?+
Aim for “Good” or “Strong”. If you see “Weak” or “Fair”, make the password longer and add more character types.

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Password Strength Checker — free online password strength, password strength checker, password test, strong password, password security, password score, check password strength, password entropy. No signup required. Works in your browser.