Developer Tools
Chmod Calculator
Calculate Unix file permissions with visual checkboxes
Permissions
| Read (r) | Write (w) | Execute (x) | Value | |
|---|---|---|---|---|
| Owner | 6 | |||
| Group | 4 | |||
| Others | 4 |
Special Permissions
Octal Input
Enter 3 or 4 digit octal value (e.g., 755 or 4755)
Result
rw-|rw-|rw-
Octal
644
Symbolic
rw-r--r--
chmod 644 filenamePresets & History
Permission Explanation
Read (r = 4)
View file contents or list directory contents
Write (w = 2)
Modify file contents or create/delete files in directory
Execute (x = 1)
Run file as program or enter directory
Why Use Chmod Calculator?
- ✓100% Free - No hidden costs or premium features
- ✓No Signup Required - Start using instantly without creating an account
- ✓Privacy First - All processing happens in your browser. Your data never leaves your device
- ✓Lightning Fast - Instant results with no server delays
How to Use
- Enter or paste your text in the input area above
- The tool will automatically process your input
- Copy the result or download it as a file
Features
- ✓Visual permission checkbox matrix
- ✓Octal and symbolic representation
- ✓Special permissions (SETUID, SETGID, Sticky)
- ✓Common permission presets
- ✓Permission history tracking