Chmod Calculator
Converts Unix file permissions between checkbox, symbolic (rwxr-xr-x), and octal (755) notation, with common presets and a ready-to-run chmod command.
| Owner | Group | Others | |
|---|---|---|---|
| read | |||
| write | |||
| execute |
Numeric (octal)
755
Symbolic
rwxr-xr-x
Command
chmod 755 file
Presets
Chmod Calculator — Free Online Tool
Converts Unix file permissions between checkbox, symbolic (rwxr-xr-x), and octal (755) notation, with common presets and a ready-to-run chmod command.
How to use the Chmod Calculator
- Open the tool above — it runs entirely in your browser, so your input never leaves this page.
- Paste or type your input into the field, then press the relevant button (e.g. Encode / Decode, Generate, or Convert).
- Copy the result from the output area with the copy button orCtrl/Cmd + C.
- No signup, no upload, and no tracking — repeat as often as you need.
Frequently asked questions
Is the Chmod Calculator free to use?
Yes. The Chmod Calculator is completely free, with no signup, no ads inside the tool, and no hidden limits.
Does the Chmod Calculator upload my data?
No. The Chmod Calculator processes everything locally in your browser. Your input is never sent to a server, so it stays private even on shared devices.
Does the Chmod Calculator work offline?
After the page loads, the Chmod Calculator runs entirely in your browser, so it keeps working without a network connection.
Free & private — why use this Chmod Calculator
The Chmod Calculator runs 100% client-side in your browser. Your data is never uploaded to a server, no account is required, and the tool is completely free. It works offline once the page has loaded and is part of a growing collection of privacy-first developer utilities.