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chmod Calculator

Convert and calculate Unix file permissions between numeric and symbolic notation.

Permission Settings

Owner
Group
Others

Result

Numeric
Symbolic
Command
chmod 755

Common Presets

What is this tool?

This tool converts Unix file permissions between numeric notation (e.g. 755) and symbolic notation (e.g. rwxr-xr-x). Set permissions intuitively with checkboxes and generate chmod commands instantly.

How to Use

  1. Use the checkboxes to set read, write, and execute permissions for owner, group, and others.
  2. You can also type numeric or symbolic notation directly to convert.
  3. Click a preset button to quickly apply common permission sets.
  4. Enter a file path to generate a ready-to-use chmod command.

Examples

  • Set 755 for a web server's public directory.
  • Set 600 for a config file to restrict access to the owner only.
  • Set 775 for a shared directory to allow group write access.