Free Tool
Chmod Calculator
Calculate Unix file permissions. Toggle r/w/x for owner, group, and others. See numeric and symbolic notation.
Numeric
644
Symbolic
-rw-r--r--
Command
chmod 644 file
Read
Write
Execute
Owner
Group
Others
About the Chmod Calculator
The Chmod Calculator is a free online tool that lets you calculate Unix file permissions in numeric and symbolic notation. It runs entirely in your browser with no sign-up required, so you get instant results while your data stays on your device. It is built for developers, designers, and anyone who needs a fast, reliable chmod calculator without installing software.
How to use the Chmod Calculator
- 1Open the Chmod Calculator and enter or paste your input.
- 2Adjust the available options to match what you need.
- 3View the result instantly as you work.
- 4Copy or download the output to use in your project.
Frequently asked questions
Is the Chmod Calculator free to use?
Yes. The Chmod Calculator is completely free with no account, sign-up, or installation required.
Is my data private when I use the Chmod Calculator?
This tool runs entirely in your browser. Your data is never uploaded to a server, which makes it safe to use with sensitive input.
Do I need to install anything?
No. The Chmod Calculator works in any modern web browser on desktop or mobile, with nothing to download.
Can I use the Chmod Calculator on mobile?
Yes. The tool is responsive and works on phones, tablets, and desktops.
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