Free Password Strength Checker
Check how strong a password is, with an estimated resistance to guessing and a clear checklist, directly in your browser.
Enter a password to check its strength.
How to check a password
- Type or paste a password.
- Review the strength meter and checklist.
- See the estimated resistance to offline guessing.
How strength is estimated
This tool estimates entropy from the character pool used (lowercase, uppercase, numbers, symbols) and password length, then estimates crack time assuming a realistic offline attack rate of 10 billion guesses per second. Common passwords are flagged directly, since attackers try those first regardless of length.
A note on scope
This is a technical entropy estimate, not a full pattern-aware analysis like specialized tools such as zxcvbn. It won't catch every predictable pattern (like keyboard walks or personal names), so use it as a helpful signal, not the final word.
Common use cases
- Check whether an existing password appears strong
- Understand what makes a password weak
- Estimate resistance to offline password guessing
Frequently asked questions
Is this tool free?
Yes. It is completely free, with no signup and no limits.
Is my password uploaded anywhere?
No. It is checked entirely in your browser and never sent to Inqita or stored.
What makes a password strong?
Length matters most, followed by using a mix of uppercase, lowercase, numbers, and symbols, and avoiding common or reused passwords.
Why is a long password still marked weak?
If it's a commonly used password (like "password1"), it's flagged as weak regardless of length, since attackers try common passwords first.
Should I use this password checker to test my real password?
It runs entirely in your browser and nothing is transmitted, but as general security practice, avoid typing sensitive real passwords into any third-party website when you can test with a similar but different one.