Developer tool
chmod Calculator
Check the permissions for owner, group, and public, then copy the number.
Processed in your browser. The text is not sent to our servers.
How to calculate a chmod number
- Check read, write, and execute for the owner, the group, and everyone else.
- Click Build permission.
- Copy the number, such as 644 or 755.
Read is 4, write is 2, and execute is 1. Owner read and write, with read for everyone else, is 644. The page does not change a file.
Frequently asked questions
Does this change a file on a server?
No. It only writes the number and the rwx letters. You apply it yourself if you need to.
What is 755?
The owner can read, write, and execute. Group and public can read and execute.
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