Chmod Calculator
Calculate Linux/Unix file permissions in octal and symbolic formats.
| Role | Read (4) | Write (2) | Execute (1) |
|---|---|---|---|
| Owner | |||
| Group | |||
| Public / Others |
Octal Input (e.g. 755)
Linux Permissions
755
-rwxr-xr-xchmod 755 filename
How to use
- Check the boxes for Read, Write, and Execute permissions for Owner, Group, and Public.
- The numeric (octal) and symbolic representations will update automatically.
- Alternatively, type an octal code (e.g., 755) in the input box to see the corresponding checkboxes and symbols.
- Copy the 'chmod' command for use in your terminal.
About Chmod
Chmod (change mode) is a Unix command used to change access permissions of file system objects.
Numeric (Octal)
Read=4, Write=2, Execute=1. Sum these up for each role (Owner, Group, Others). Example: 7 = 4+2+1 (rwx).
Roles
Owner: The user who owns the file. Group: Users in the file's group. Public/Others: Everyone else.
Symbolic
Represented as r (read), w (write), x (execute), and - (no permission). String format: various combinations like -rwxr-xr-x.