CHMOD Calculator
Calculate Linux file permissions using checkboxes and instantly get the octal CHMOD value.
| Read+4 | Write+2 | Execute+1 | Octal | |
|---|---|---|---|---|
| Owner | 6 | |||
| Group | 4 | |||
| Others | 4 |
rw-r--r--
chmod 644 filename
Features
- Visual checkbox interface for all 9 permission bits
- Instant octal and symbolic notation output (e.g., 755 and rwxr-xr-x)
- Supports special bits: Setuid, Setgid, and Sticky bit
- Bidirectional: type an octal number to see which permissions are enabled
- Shows the ready-to-use chmod command
Use Cases
- Quickly generating chmod values for web server configuration
- Understanding what permission numbers like 644, 755, or 777 mean
- Setting correct permissions for shell scripts or SSH keys
How to Use
- Check or uncheck the Read, Write, Execute boxes for Owner, Group, and Others.
- The octal numeric value and symbolic notation update instantly.
- Copy the ready-to-use chmod command from the output.