Chmod Permission Calculator

Calculate chmod permissions visually — tick rwx boxes and get octal (755) plus symbolic (rwxr-xr-x).

644Octal

rw-r--r--Symbolic

chmod 644 filename

How to use

Tick the permission boxes (or pick a preset) and get the octal and symbolic forms instantly.

What do the numbers mean?

Each digit is user, group, other: read=4, write=2, execute=1. 755 = rwxr-xr-x.

Are there presets?

Yes — common presets like 755 (executable), 644 (files) and 600 (private) in one click.

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