Linux Chmod Permissions Calculator

Calculate numeric octal (e.g. 755), symbolic notation (rwxr-xr-x), and executable terminal commands for Unix file permissions.

How It Works & Processing Standards

Calculate numeric octal (e.g. 755), symbolic notation (rwxr-xr-x), and executable terminal commands for Unix file permissions.

Your input data is never sent to any server and is securely processed on your device.

Current Limits

  • Maximum input length: 100,000 characters

Linux Chmod Permissions Calculator is a 100% free, browser-based online utility. All calculations and file conversions run locally inside your browser (Local-First) without sending data to remote servers, keeping your documents and inputs strictly private.

How to Use Linux Chmod Permissions Calculator

  1. 1
    Select PermissionsChoose owner, group, and others permission levels (0-7).
  2. 2
    Copy Chmod CommandCopy the numeric mode, symbolic representation, or full shell command.

Common Use Cases

  • Setting up web server file permissions on NGINX/Apache (e.g. 644 for files, 755 for directories)
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