Chmod Calculator
Developer ToolsUnix file permissions — numeric and symbolic
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History
All history →Chmod Calculator — at a glance
Tick read, write and execute boxes for owner, group and others to get the numeric chmod value (like 755), the symbolic form (rwxr-xr-x) and a ready-to-run command.
How to use it — step by step
Tick the permissions you want.
Enter your values
Fill in the boxes. Sample values are already there so you can see how it works.
Calculate
Press the button to get your answer instantly.
Read the result
The main answer is shown in a large card with extra details below it.
Copy it
Use the copy button to save the result anywhere.
Pro tips
Small things that make the result better.
Quick facts
Frequently Asked Questions
What does 755 mean?+
Owner can read, write and execute (7). Group and others can read and execute (5).
Is my data safe?+
Yes. Everything runs inside your own browser. Your text, files and images are never uploaded to any server.
Is this tool really free?+
Yes — completely free, no signup, no watermark and no usage limit.