File Permissions Calculator
Calculate Unix file permissions in numeric and symbolic notation. Free, fast, and runs 100% in your browser.
Setting correct file permissions is critical for security on Linux servers. Too permissive and your files are exposed; too restrictive and your applications break. This calculator makes permission management visual and intuitive.
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Chmod Calculator
Calculate Unix/Linux file permissions in numeric and symbolic notation.
7
rwx
5
r-x
5
r-x
755
-rwxr-xr-x
chmod 755 <file>chmod u=rwx,g=rx,o=rx <file>Feature Overview
| Feature | Details |
|---|---|
| Numeric notation | ✓ |
| Symbolic notation | ✓ |
| Interactive | Click toggles |
| Privacy | 100% client-side |
Frequently Asked Questions
What permissions do web files need?
Typically 644 (rw-r--r--) for files and 755 (rwxr-xr-x) for directories.
What is the execute bit on directories?
On directories, execute means the ability to traverse (cd into) the directory. Without it, you cannot access contents.