Password Strength Checker
Check Password Strength and get a plain-English verdict you can act on.
Workspace
ReadyUUIDs
Press Generate to create UUIDs.
Free online Password Strength Checker
Check Password Strength and get a plain-English verdict you can act on. The Tools4U Password Strength Checker is part of our Security & Privacy collection of Security Utilities utilities. It works online in any modern browser — no download, no sign-up and no file upload, so your data never leaves your device.
How to use
Using Password Strength Checker in three steps
-
1
Add your input
Paste text, drop a file, or type directly into the workspace.
-
2
Run the tool
Choose the options you need and press the action button.
-
3
Copy or download
Take the result with one click — nothing is stored anywhere.
Features
Why people use this tool
Instant results
Everything runs locally, so results appear as you type.
Privacy-first
Your input never leaves the browser. No uploads, no logs.
Handles big inputs
Comfortable with large files and long documents.
Always free
No account, no limits, no watermark on results.
FAQ
Frequently asked questions
Is Password Strength Checker free to use?
Is my data uploaded to a server when I use Password Strength Checker?
Can I use Password Strength Checker on mobile?
Do I need to install any software to use Password Strength Checker?
Keep going
Related tools
People using Password Strength Checker often open these next.
Hash Identifier
Identify Hash from its shape and length.
Password Generator
Generate Password instantly with sensible, copy-ready defaults.
Passphrase Generator
Generate Passphrase instantly with sensible, copy-ready defaults.
Secure Token Generator
Generate Secure Token instantly with sensible, copy-ready defaults.
Missing a tool you need?
Tell us which tool you'd like to see on Tools4U. We review suggestions and prioritise requests that can help the most users.