Generators & Calculators
Unix Permissions (chmod) Calculator
Convert between octal and symbolic Unix file permissions.
❓ Frequently Asked Questions
What is the Unix Permissions (chmod) Calculator used for?
Convert between octal (755) and symbolic (rwxr-xr-x) file permissions.
Is the Unix Permissions (chmod) Calculator free and private?
Yes — it's completely free and runs entirely in your browser. Whatever you enter stays on your device and is never uploaded to any server.
Do I need to install anything to use the Unix Permissions (chmod) Calculator?
No. It works in any modern web browser on desktop, tablet, or phone — no downloads, no browser extensions, and no account required.