Password Strength
Password Strength — runs in your browser. Inputs are not stored.
Password strength
Enter values, then press Calculate.
Input is not sent to a server; scoring runs in the browser only.
How to use
- Enter the string to check in password. The default is a masked field.
- Turn on Show to see the characters. Keep it off in public places.
- Press Check for a score (0–100), a grade, and improvement hints. Length, upper/lower case, digits, symbols, and repeated patterns add or subtract points.
- When you finish, Clear the field. There is no breach-database lookup.
- A high score can still be a reused or leaked password. Use the password generator tool to create one.
Key concepts
Password strength check shows a local hint of score and safer-password conditions. It scores length, character kinds, and repetition by rule; there is no Have I Been Pwned-style breach search. The password is not sent to a server.
Scoring stays in the browser. The score does not guarantee you cannot be hacked. On a shared PC, make Clear a habit after checking. A high score does not stop reuse or phishing. Use the password generator to create a new one.
Example
A short simple value such as abc123 scores low and hints at length and symbols. Mixing upper/lower, digits, and symbols at 12+ characters raises the score. Heavy repetition such as aaaaaaa1 loses points. Show switches the input type so you can check typos. Three words at length 14 can score better under the rules than Password1!. Short digit-only values score low; length 16 with symbols reduces hints.
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Frequently asked questions
Does a password strength check go to a server?
No. It is fully local. Nothing is sent or stored. The input does not leave on the network.
Does a high score guarantee I cannot be hacked?
It is only a score hint and does not guarantee security. Leaks and reuse are separate. The score is not a security warranty.
What is the Show password option?
The Show checkbox changes the input type so you can see the characters and check typos. Watch for shoulder surfing.
Do you check whether it is in a breach database?
No. There is no online lookup and no Have I Been Pwned integration.
Is a password generator on this screen too?
This tool is for checking. Use the password generator tool to create a new password. Generation is a different tool.
Are passwords with spaces scored?
The whole entered string is scored by the rules. Whether spaces are allowed depends on the site you sign up for.
Last reviewed: 2026-09-04