How to Calculate Chmod Permissions
Calculate Linux file permissions with an interactive chmod calculator. Convert between numeric (755) and symbolic (rwxr-xr-x) notation instantly.
Open Chmod Calculator →Step-by-Step Guide
Set permissions visually
Toggle read (r), write (w), and execute (x) permissions for owner, group, and others using the interactive checkboxes. The numeric value updates in real-time as you click.
Or enter a numeric value
Type a chmod number like 755, 644, or 777 and see the permission breakdown instantly. The tool shows exactly which users can read, write, and execute the file.
Understand the meaning
See the full symbolic notation (e.g., rwxr-xr-x) alongside the numeric value. A plain-English description explains what each permission set means in practice.
Copy the chmod command
Copy the ready-to-use chmod command (e.g., chmod 755 filename) to run in your terminal. For recursive changes on directories, the tool also provides the -R flag variant.
Try It Now — Free
No signup, no download. Runs entirely in your browser.
Open Chmod Calculator