Chmod Calculator
Visual chmod command builder with permission matrix, special permissions (setuid/setgid/sticky), presets, and multiple output formats
All processing happens in your browser. No data is uploaded.
Chmod Calculator
Visual chmod command builder with permission matrix, special permissions (setuid/setgid/sticky), presets, and multiple output formats
🔒All processing happens in your browser. No data is uploaded.
Octal Input
Permission Matrix
ReadWriteExecuteOctal
Owner (u) 7
Group (g) 5
Others (o) 5
Special Permissions
Set User ID (SUID) (4)Execute as the file owner, not the user running it
Set Group ID (SGID) (2)Execute as the file group; new files inherit directory group
Sticky Bit (1)Only file owner can delete/rename files in directory
Results
Numeric (Octal)
0755Symbolic
rwxr-xr-xls -l output
-rwxr-xr-xchmod (numeric)
chmod 755 myfilechmod (symbolic)
chmod u=rwx,g=rx,o=rx myfilePermission Breakdown
OwnerGroupOthers
-rwxr-xr-x
Common Presets
755
Directories, executables
644
Regular files
777
Full access (caution)
600
Private files (SSH keys)
400
Read-only private
700
Private directory
664
Shared group files
775
Shared group directory
444
Read-only for all
666
Read-write for all
2755
Setgid directory
4755
Setuid executable
1777
Sticky bit (/tmp)
1755
Sticky + standard dir