Chmod Calculator

Visualize and calculate Linux file permissions.

Read (4)
Write (2)
Execute (1)
Owner
Group
Public
Octal Notation
755
Symbolic Notation
-rwxr-xr-x

What is this Tool?

Chmod Calculator is a tool that allows you to visually set Linux/Unix file permissions and converts them into Octal and Symbolic notation.

How to use

  1. Select the Read, Write, and Execute permissions for Owner, Group, and Public using the checkboxes.
  2. Check the real-time calculated numeric (e.g., 755) and symbolic (e.g., -rwxr-xr-x) results at the bottom.
  3. Click the copy button to copy the command.

Why do you need it?

  • Intuitive Setup: Easily set permissions with checkboxes without having to manually calculate complex values.
  • Error Prevention: Generates accurate permission codes to prevent security configuration errors for important server files.

FAQ

Q. What is 777 permission?

It is a setting that gives read, write, and execute permissions to all users. It can be very dangerous for security, so avoid using it unless there is a specific reason.