Is Chmod Calculator safe to use? Are my files uploaded to a server?

Yes, Chmod Calculator is completely safe to use. This tool processes everything directly in your browser using client-side technology. Your data never leaves your device -- nothing is uploaded to any server. This ensures complete privacy and security for all your files and data.

Can I use Chmod Calculator on any device or browser?

Yes, Chmod Calculator works on any modern web browser including Chrome, Firefox, Safari, and Edge on desktop, tablet, and mobile devices. No installation or plugins are required -- it runs entirely in your browser.

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Chmod Calculator

Unix file permissions calculator (rwx to octal)

Permissions

Read (r)

Write (w)

Execute (x)

Owner

Group

Others

Enter Octal Value

Octal

644

Symbolic

-rw-r--r--

Command

chmod 644 filename

Common Permissions

About Chmod Calculator

Calculate Unix file permissions with an interactive grid. Convert between octal (755) and symbolic (rwxr-xr-x) notation. Common permission presets included. Free chmod calculator.