Chmod Permissions Calculator
Toggle read, write and execute for owner, group and others — and get the octal number (755, 644…), symbolic notation and the ready chmod command.
| r | w | x | |
|---|---|---|---|
| owner | |||
| group | |||
| other |
755 rwxr-xr-x Runs 100% in your browser — nothing is ever uploaded.
What is Chmod Calculator?
Calculate chmod permissions visually: check owner/group/other boxes and get the octal value (like 755) and symbolic notation instantly. Free online tool. Enter a value and watch the result update instantly — no waiting and no page reloads. Free and unlimited, with no watermarks and no registration — all processing happens right in your browser, so nothing is ever sent to a server.
How to use Chmod Calculator
- Open Chmod Calculator — it runs instantly in your browser.
- Enter your value or adjust the interactive controls.
- The result updates in real time as you type.
- Copy the result with one click and use it anywhere.
Frequently asked questions
Is Chmod Calculator really free?
Yes — Chmod Calculator is 100% free with no limits, no watermarks and no registration. You can use it as often as you like, on as many files or inputs as you need.
Is my data safe when I use Chmod Calculator?
Absolutely. Chmod Calculator runs entirely in your browser using JavaScript — your input is processed on your own device and is never uploaded to any server.
Does Chmod Calculator work on mobile devices?
Yes. Chmod Calculator works in any modern browser on desktop, tablet and mobile (Chrome, Firefox, Safari, Edge) — there is no app to install.
Do these tools touch my servers?
No. OpsForge tools are pure calculators and generators that run in your browser — they never connect to your infrastructure. You copy the result and apply it yourself.
Is the chmod calculator accurate for all systems?
Yes — octal permission notation is a POSIX standard, so the results apply identically on Linux, macOS and BSD.
Will more DevOps tools be added?
Yes — Dockerfile, docker-compose, nginx and CI config generators are on the roadmap. Everything will stay free and client-side.