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Chmod calculator
Unix file permissions: tick boxes to get 755-style numbers and rwx text, or the other way.
- Free
- No sign-up
- Works on any device
About Chmod calculator
Tick read, write and execute boxes for owner, group and others to get the numeric mode such as 755 and the rwx text such as rwxr-xr-x, or enter a number to see what it allows. Read is 4, write is 2 and execute is 1, and each digit is the sum for one class.
How to use Chmod calculator
- Tick the read, write and execute boxes for owner, group and others.
- Read the number such as 755 and the rwx text shown.
- Or type a number to see which boxes it sets.
Why use this tool?
- Private: everything happens in your browser. Nothing you enter is uploaded.
- Free, with no sign-up, no watermark and no limit on how often you use it.
- Works on phones, tablets and computers: Android, iPhone, Windows, Mac and Linux. Nothing to install.
- Free to embed on your own website, with a ready-made code to copy.
- Available in 10 languages.
Also known as
Frequently asked questions
What does chmod 755 mean?
The owner can read, write and execute (7), while group and others can read and execute (5) but not write. It is common for directories and scripts.
What do the digits in chmod add up to?
Read is 4, write is 2 and execute is 1. Add the values for each of owner, group and others, so 6 means read and write.
What permissions should a web file have?
A common choice is 644 for files and 755 for folders. Avoid 777, because it lets everyone write to the file.
Is Chmod calculator free?
Yes. Chmod calculator on Toolipedia is free to use, with no sign-up and no watermark.
Is it safe to use?
Yes. Everything is worked out in your browser, and nothing you enter is sent to our server.
Does it work on my phone?
Yes. It works in any modern browser on Android and iPhone, as well as on tablets and computers. There's nothing to install.
Do I need an account?
No. Just open the page and use the tool. There's no sign-up and no email needed.
Can I put Chmod calculator on my own website?
Yes. Use the Embed on your site button under the tool to copy a short piece of code and paste it into your page. It is free, needs no account, and the tool keeps working inside your page.