Chmod Linux Permissions Calculator
Calculate Linux/Unix file permissions in octal, symbolic, and terminal command formats.
Owner
Group
Public / Others
Overview
Free online chmod permissions calculator. Check visual boxes for read, write, and execute to generate octal numbers (e.g. 755, 644), symbolic strings, and commands.
Chmod Calculator: Linux File Permission Octal Generator
The Chmod Calculator converts visual Read, Write, and Execute checkboxes into octal permission values (e.g. 755, 644, 700) for Linux and macOS terminals.
How to Compute Chmod Permissions
Fast & IntuitiveCheck Permissions
Toggle Read (4), Write (2), and Execute (1) across Owner, Group, and Public.
Review Octal Output
Observe the 3-digit numeric code update live.
Copy Terminal Command
Copy the `chmod <octal> <filename>` snippet.
Key Highlights & Advantages
Zero server uploads. Everything processes securely within your local browser memory.
Immediate results with no file upload or download queues.
No registration, no paywalls, and no hidden quotas.
Seamlessly optimized for mobile smartphones, tablets, and desktop workstations.
All data processing runs natively via W3C compliant browser hardware acceleration.
- Set sensitive configuration files (like .env) to chmod 600 so only the owner can read or modify them.
Related Guides
Frequently Asked Questions
1 Q&AsWhy is chmod 777 dangerous?
It grants universal write and execute privileges to anyone on the server, exposing critical system files.
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