Password Strength Test
Review a password's length and character variety locally in your browser.
Your text is analyzed in this browser and is not sent to a server. Avoid entering a password you currently use for an important account.
Tool guide
About Password Strength Test
Review a password's length, character variety, and an illustrative guess-time estimate in the browser. This check is a rough aid and cannot know whether a password has been leaked or reused elsewhere.
How to use this tool
- 1Enter a password you are considering, preferably a new sample rather than a current account password.
- 2Review the strength label, tips, and estimated entropy shown by the page.
- 3Use a password manager and unique credentials; do not treat the estimate as proof of account security.
How the tool works
The page checks simple features such as length and character groups to assign a score and estimate entropy. Its crack-time note uses a stated hypothetical guessing rate; real attacks use word lists, leaks, and patterns rather than exhaustive guesses alone. The text is analyzed in the browser.
Worked real-world example
A long unique phrase can be harder to guess than a short password with several symbol types, even when the short one looks complex.
Common scenarios and use cases
Spot basic weaknesses before creating a new password and learn why length and uniqueness matter.
Important details and limitations
The estimate does not check breach databases, online rate limits, MFA, phishing, or reuse. Avoid entering an active secret into a website, even one that says it works locally; a password manager's generator is preferable.
Check the output unit as well as the number. If the result will be reused in another calculation, retain full precision where possible and round only at the end. For measurements governed by a technical specification, use the standard and tolerance required by that document.
Frequently asked questions
Does the score guarantee safety?
No. It is a simplified estimate and does not check leaks or account protections.
What makes a password stronger?
Length, uniqueness, and resistance to common patterns are useful factors.
Should I paste my current password here?
Prefer not; use a new sample and a trusted password manager.