Is Chmod Calculator free to use?

Yes, Chmod Calculator is completely free with no hidden fees or usage limits. Pro features are available for power users.

Absolutely. All processing happens locally in your browser. Your files never leave your device.

Do I need to install software?

No installation required. Works directly in your web browser on any device.

Calculate Unix file permissions visually

Octal Notation

755

Symbolic Notation

rwxr-xr-x

Chmod Command

chmod 755 filename

Recursive Command Builder

PRO

Filename / path

Recursive (-R) Verbose (--verbose) Changes (--changes)

chmod 755 filename

Permission Reference

PRO