Simplify Linux file permission management with our Chmod Calculator. visually set permissions for Owner, Group, and Public using checkboxes to generate the correct Octal (e.g., 777) and Symbolic (e.g., -rwxrwxrwx) values. You can also input an octal code to see the visual representation. A perfect utility for sysadmins and developers configuring web servers or scripts.
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Chmod Calculator
Visual permission calculator for Unix/Linux file systems (Octal & Symbolic).
Owner
Group
Public
Octal Notation
644
chmod 644 filename
Symbolic Notation
-rw-r--r--
Chmod Calculator (Permissions)
Calculate Linux/Unix file permissions. Convert between octal (755) and symbolic (rwxr-xr-x) formats easily.
1
Select Roles
Check boxes for Owner, Group, and Public permissions.
2
Toggle Rights
Click Read, Write, and Execute for each category.
3
Copy Octal
Grab the three-digit code for your shell command.
Key Features
Visual Wrapper
Click checkboxes to toggle Read, Write, and Execute permissions.
Bi-directional
Update checkboxes to get code, or enter code to update checkboxes.
Octal & Symbolic
See both 755 and rwxr-xr-x formats instantly.
Common Presets
Quickly understand common modes like 777, 755, and 644.
Frequently Asked Questions
Chmod (Change Mode) is a command-line utility in Unix-like systems to set file access permissions.
755 gives the owner full control (Read/Write/Execute), while Group and Public have Read and Execute access only.
Run the command chmod 755 filename in your terminal.
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