chmod Calculator - Linux File Permission Calculator

Calculate Linux file permissions visually. Checkbox grid for Owner/Group/Others with octal and symbolic notation.

Share

Permission Matrix

ReadWriteExecute
Owner
Group
Others

Permission Meanings

Read (r)
Read file contents or list directory
Write (w)
Modify file contents or create/delete files in directory
Execute (x)
Execute file or access directory contents

Result

Octal
755
Symbolicrwxr-xr-x
chmod Commandchmod 755 filename

Quick Presets

How to Use

  • • Check or uncheck Read (r), Write (w), Execute (x) permissions.
  • • The octal and symbolic results are updated in real-time.
  • • Click a preset to quickly set common permission values.

Related Tools

More Code & Dev Tools

Git Cheatsheet

Quick reference for common Git commands. Search, copy, and u...

Code Minifier

Minify HTML, CSS, and JavaScript code. Reduce file size by r...

Redis Commands Cheatsheet

Quick reference for 100+ Redis commands. Search, filter by c...

Code Share

Create and share code snippets online. Syntax highlighting a...

WebSocket Tester

Test WebSocket connections and messages in real-time. Connec...

IP Calculator

Calculate IP ranges, subnet masks, and CIDR notation. Networ...

HTML Formatter

Format and minify HTML online. Beautify HTML code or compres...

Port Checker

Check if a port is open online. Test port availability and c...

SQL Formatter

Format and beautify SQL queries online. Improve SQL readabil...

Color Converter

Convert between HEX, RGB, HSL color formats. Color picker wi...

HTTP Status Codes

Reference guide for HTTP status codes. Learn the meaning of ...

.gitignore Generator

Generate .gitignore files for your projects. Select from tem...

View All Code & Dev Tools|View All Tools