How is the strength score calculated?

It is based on entropy calculation: the number of possible combinations is calculated based on the character set size and the password length.

Can a password that scores 100 not be cracked?

No password is one hundred percent uncrackable; however, a high score makes the cracking time practically impossible.

How are passwords that repeat the same characters evaluated?

The tool detects character repetition and common patterns and lowers the score.

Does this tool recommend a password manager?

The tool focuses on measuring strength; it does not offer a password manager recommendation, but it encourages you to develop the habit of creating strong, unique passwords.

What is the minimum number of characters considered secure?

According to general security standards, at least 12 characters are recommended; however, character diversity is at least as important as length.

Password Strength Checker - Test Any

100% in-browser — your password is NOT sent to any server: All analysis runs in JavaScript on your device. Open DevTools → Network; you will see no POST/fetch calls on this page.
Still avoid pasting real production passwords — habit matters.

None0/100

Generate Password

Length16

a-z lowercaseA-Z uppercase0-9 digits!@# symbols

Auto-deleted in 7 days

256-bit SSL

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Your files are encrypted with SSL and automatically deleted from our servers 7 days after processing.

📖 How to Use

Upload document

Drag-drop or pick file.

Set options

Choose operation and parameters.

Process

Server runs the task.

Download

Get result in your format.

Frequently asked questions

No. All analysis takes place in your browser; your password is never transmitted to any server.

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Password Strength Checker