Chmod Calculator
Calculate Linux file permissions visually. Convert between octal (755, 644) and symbolic (rwxr-xr-x) notation. Generate chmod commands instantly β 100% client-side, free and open.
Permission Grid
| Read | Write | Execute | |
|---|---|---|---|
| Owner | |||
| Group | |||
| Others |
chmod 755 filenameCommon Presets
Frequently Asked Questions
chmod (change mode) is a Unix/Linux command used to set file and directory permissions. It controls who can read, write, or execute a file. Permissions are assigned to three roles: Owner, Group, and Others.
Octal notation uses three digits (e.g., 755) where each digit represents permissions for Owner, Group, and Others. Each digit is a sum: Read=4, Write=2, Execute=1. So 7 means rwx (4+2+1), 5 means r-x (4+1), and 0 means no permissions.
Symbolic notation uses letters to represent permissions: r (read), w (write), x (execute), and - (no permission). For example, rwxr-xr-x means the owner has full permissions, while group and others can only read and execute.
Yes, VUREX Chmod Calculator is completely free with no registration required. Calculate permissions, convert notations, and generate commands with no limits.