Linux Permissions & Chmod Calculator

Calculate Linux file permissions in octal (e.g. 755, 644) and symbolic notation (rwxr-xr-x) with SUID, SGID, Sticky Bit, and common presets.

Quick Presets
Permission Matrix
Scope
Read (4)
Write (2)
Execute (1)
Owner (u)
Group (g)
Others (o)
Special Bits
Calculated Outputs
Octal Notation
{{ octalString }}
Symbolic Notation
{{ symbolicString }}
Linux Commands
chmod {{ octalString }} filename
chmod -R {{ octalString }} /path/to/directory
chmod {{ symbolicCmd }} filename
About Linux Permissions

Linux permissions consist of three permission trios for Owner, Group, and Others. Each trio is assigned bits for Read (4), Write (2), and Execute (1).

100% Client-Side: Calculations are instant in browser memory.

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