Is my password sent anywhere?

No. The check runs entirely in your browser.

How accurate is the crack time?

It's a rough estimate for guessing attacks, not a guarantee.

Why is a long simple password strong?

Every extra character multiplies the number of guesses needed.

Does it check leaked passwords?

No. It judges the pattern, not breach lists.

What's a good length?

At least 12–16 characters, or four or more random words.

Can I generate a strong password here?

Use the Password Generator tool for that.

Password Strength Checker

Score a password's strength and estimate crack time.

Reading time:: 2 min
Last updated:: 5 August 2026
Price:: Free, no signup

Your text

Results (live)

Type or paste text to see the result.

What the Password Strength Checker does

Type a password and see how strong it is, with a score and a rough estimate of how long it would take to crack by guessing. 'summer2024' scores poorly; a long random phrase scores far better.

The check looks at length and the mix of lowercase, uppercase, numbers and symbols. Nothing you type leaves your browser.

Why the Password Strength Checker is useful

Most people overestimate their passwords. Seeing an estimate of 'minutes' instead of 'centuries' is a strong push to choose something better.

It's also useful for explaining password rules to family or staff, because they can try examples and watch the score change.

Also known as: password strength checker, password checker, free password strength checker, online password strength checker, password strength checker online free, password strength checker tool, best password strength checker tool.

How to use the Password Strength Checker

1
Type a password
Use a similar example rather than your real one if you prefer.
2
Read the score
Check strength and the estimated crack time.
3
Make it longer
Add words or characters and watch the score rise.

Key features

Strength score
Estimated time to crack
Checks length and character types
Runs fully offline in the browser

Benefits

Learn what makes a password strong
Test new passwords before using them
Teach others with live examples

Real-life use cases

Office training

An IT manager shows staff how 'Company1!' scores weakly while a four-word passphrase scores highly.

Choosing a Wi-Fi password

A family tests a few options and picks a long phrase that's both strong and easy to type for guests.

Tips for the best results

Length beats complexity: four random words usually beat eight mixed characters.
Avoid names, birthdays and keyboard patterns — real attackers try those first.
Use a password manager and a different password for every account.

Conclusion

Try a password, see its strength and crack-time estimate, and keep improving it until it's genuinely hard to guess.

Frequently asked questions

Is my password sent anywhere?: No. The check runs entirely in your browser.
How accurate is the crack time?: It's a rough estimate for guessing attacks, not a guarantee.
Why is a long simple password strong?: Every extra character multiplies the number of guesses needed.
Does it check leaked passwords?: No. It judges the pattern, not breach lists.
What's a good length?: At least 12–16 characters, or four or more random words.
Can I generate a strong password here?: Use the Password Generator tool for that.

Related tools you may need

Password Generator — Generate strong random passwords with configurable length.
Hash Generator (MD5, SHA) — Compute MD5, SHA-1, SHA-256 and SHA-512 hashes.
SHA-256 Generator — Compute a SHA-256 checksum of any text.
UUID Bulk Generator — Generate many RFC 4122 UUIDs at once.
SHA-1 Generator — Compute a SHA-1 checksum of any text.

Keep exploring

Browse the full tools directory, filter by category, or read guides on the Text Tools Hub blog.