Is my password sent anywhere when I test it?

No. The test runs on your device in your browser, and nothing is uploaded or saved. As a general habit, still avoid typing your real passwords into sites you do not trust.

How is the strength estimated?

From the length, the variety of characters and common weaknesses such as well-known passwords, keyboard patterns, repeated characters and years. It is an estimate, not a guarantee.

Does a strong result mean my password is safe?

Not always. The checker cannot know if your password appeared in a data breach or is reused on other sites. Use a different password for every account.

Password Strength Checker

Test how strong a password is, see an estimated time to crack it, and get tips to make it better.

Your files never leave your device

Type or paste a password. The result updates as you type, with an estimate and tips. Use "Show" to see what you typed.

About this tool

Password Strength Checker tests a password as you type, shows an estimated time to crack it, and explains what to improve. It runs only in your browser, so what you type never leaves the page, and it is free with no sign-up.

Good to know: This is an estimate from length, variety and common patterns. It cannot know if a password has appeared in a data breach.

Your files are processed entirely in your browser — nothing is ever uploaded to any server. Verify it yourself

Frequently asked questions

Is my password sent anywhere when I test it?: No. The test runs on your device in your browser, and nothing is uploaded or saved. As a general habit, still avoid typing your real passwords into sites you do not trust.
How is the strength estimated?: From the length, the variety of characters and common weaknesses such as well-known passwords, keyboard patterns, repeated characters and years. It is an estimate, not a guarantee.
Does a strong result mean my password is safe?: Not always. The checker cannot know if your password appeared in a data breach or is reused on other sites. Use a different password for every account.

Password Generator

Create strong random passwords with the length and characters you choose, using your device’s secure random generator.

Text Encrypt & Decrypt

Encrypt a message with a password using AES-256, and decrypt it again later. Everything happens in your browser.

Hash Generator

Create MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes of text or a file, and compare them with a hash you have.

Protect PDF with Password

Encrypt a PDF with a password so only people who know it can open the file.