Password Strength Checker
Score a password for length, character variety, and common weak patterns. Everything runs locally — your password is never sent anywhere.
Enter a Password
Checklist & Tips
- At least 12 characters
- Upper & lowercase letters
- Contains numbers
- Contains symbols
- Not a common password
- No obvious patterns
Tips
- •Enter a password above to see its strength.
Why use our Password Strength Checker?
Clear Strength Score
See an easy-to-read score and label — from Very Weak to Very Strong — based on length, variety, and patterns.
Actionable Tips
Get specific suggestions like adding symbols or avoiding sequences, not just a vague strength meter.
Never Transmitted
Your password is scored entirely in your browser with JavaScript. It is never sent to any server or logged.
What is a Password Strength Checker?
A password strength checker estimates how resistant a password is to guessing and cracking attempts. It typically looks at length, character variety (lowercase, uppercase, digits, symbols), and whether the password matches common leaked passwords or predictable patterns like "1234" or repeated characters.
Our free online checker scores your password using these heuristics and gives you a plain-language strength label plus concrete tips for improvement. It does not check your password against real-time breach databases — for that, pair strong, unique passwords with a reputable password manager.
What Gets Checked
- Length:Longer passwords score higher; 12+ characters is treated as a solid baseline.
- Character variety:Uppercase, lowercase, digits, and symbols each contribute to the score.
- Common passwords:Checked against a list of frequently leaked, easily guessed passwords.
- Sequential patterns:Flags runs like "abcd", "1234", or keyboard-adjacent sequences.
- Repeated characters:Flags runs of the same character repeated three or more times.
- Privacy:Scoring runs 100% client-side — your password is never uploaded or stored.
Common Use Cases
Choosing a New Password
Test a candidate password before setting it on an important account like email or banking.
Setting Password Policies
Get a feel for what makes a password weak or strong when writing internal password guidelines.
Security Awareness Training
Demonstrate live why "password123" scores poorly compared to a long random passphrase.
Auditing Old Passwords
Re-check passwords you've used for years to see if they hold up against modern guidance.
Comparing Generator Output
Pair with a password generator to confirm generated passwords score as Strong or Very Strong.
Teaching Password Hygiene
Show students or new hires concrete examples of weak patterns to avoid.
How to Check Password Strength
Type or Paste a Password
Enter a password into the input field — nothing is sent anywhere.
Review the Score
See the strength meter, numeric score, and label update instantly as you type.
Read the Checklist
Check which criteria pass or fail, like length, variety, and pattern checks.
Apply the Tips
Follow the suggested improvements and re-check until the password scores Strong or better.
Benefits of Checking Password Strength
Fewer Weak Passwords
Catch obviously weak choices before they become your account's weakest link.
Concrete Feedback
Specific tips are more actionable than a plain red/yellow/green bar alone.
Private by Design
Local-only scoring means you can safely test real password candidates.
Better Habits
Repeated use reinforces good habits like length and symbol variety over time.
No Installation
Works instantly in any modern browser — no extension or app required.
Completely Free
No signup and no limits on how many passwords you can check.
Password Strength Tips
- •Length beats complexity: A long passphrase is often stronger and easier to remember than a short, complex string.
- •Avoid dictionary words alone: Combine unrelated words, numbers, and symbols rather than a single common word.
- •Never reuse passwords: Use a unique password for every account, ideally generated and stored by a password manager.
- •Skip personal info: Avoid birthdays, names, or pet names that attackers can find on social media.
- •Watch for keyboard patterns: Sequences like "qwerty" or "asdfgh" are among the first patterns attackers try.
- •Enable 2FA too: Even a strong password benefits from two-factor authentication as a second layer of defense.
Check Your Password Strength Now
Whether you're setting a new password or auditing an old one, our free checker gives you an instant score plus specific, actionable feedback — all processed locally in your browser.
Type a password above, review the checklist, and adjust until it scores Strong or Very Strong. No signup, no uploads, and your password is never stored.
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Frequently Asked Questions
Is my password sent to a server?
No. The strength check runs entirely in your browser using JavaScript. Your password is never transmitted, logged, or stored anywhere.
Does this check against real password breach databases?
No. This tool checks against a small built-in list of extremely common passwords and pattern heuristics (length, variety, sequences, repeats). It does not query live breach databases like Have I Been Pwned.
What makes a password score as Very Strong?
Generally 16+ characters with a mix of uppercase, lowercase, numbers, and symbols, with no common words, sequences, or repeated characters.
Why did my long password still score low?
Length helps, but a long password made entirely of repeated characters, sequential digits, or a common dictionary word will still be penalized for those risky patterns.
Should I reuse a password that scores Very Strong?
No. Even a strong password should be unique per account. Reused passwords are risky because a breach on one site can compromise every account using the same password.
Does this tool store the passwords I test?
No. Nothing is saved in local storage, cookies, or any database. Once you leave or refresh the page, the input is gone.
Is this password strength checker free?
Yes. It's completely free to use with no signup and no limit on how many passwords you can check.
Should I use a password manager instead of memorizing passwords?
Yes, for most accounts. A password manager lets you use long, unique, randomly generated passwords everywhere without needing to remember each one.