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Chmod & Linux Permissions Calculator

Developer Utilities

Interactive Linux and Unix chmod permissions calculator. Toggle Read, Write, and Execute permissions for Owner, Group, and Public/Others to instantly generate octal codes (755, 644, 777), symbolic notation (rwxr-xr-x), and terminal commands.

100% Client-Side
Numeric Octal755
Symbolic Mode-rwxr-xr-x
chmod 755 script.sh
Quick Presets:

Owner (User)

7

Group Members

5

Others / Public

5

Zero-Knowledge Privacy Guarantee

This Chmod & Linux Permissions Calculator executes 100% locally in your browser’s JavaScript memory using client-side Web APIs. No inputs, keys, tokens, files, or outputs are ever uploaded to any server or logged in any database.

Key Features & Capabilities

  • Interactive 3x3 permission grid for Owner, Group, and Others
  • Real-time numeric octal output (e.g. 755, 644, 700)
  • Real-time symbolic string output (e.g. -rwxr-xr-x)
  • Common preset buttons (Web files 644, Scripts 755, Full access 777, Private 600)
  • 1-click chmod command copying

How to Use This Tool

  1. 1Check or uncheck Read (r), Write (w), and Execute (x) boxes for each user class.
  2. 2Or click a preset like "Web Script (755)" or "Config File (600)".
  3. 3Copy the octal code or full terminal command.

Frequently Asked Questions (FAQ)

755 gives the owner full Read, Write, and Execute permissions (7), while group members and all others have Read and Execute permissions (5).

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