Chmod Calculator
Chmod CalculatorCalculate Linux file permissions (755, 644). Fast, free and secure — works in your browser. By AK Computer, Dwarka.
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How to use
- 1 Tick the read, write and execute checkboxes for owner, group and others.
- 2 Watch the numeric mode such as 755 update as you toggle permissions.
- 3 Alternatively type a numeric value to see the permission breakdown.
- 4 Copy the chmod command to apply the permissions on Linux.
Frequently Asked Questions
What does chmod 755 mean?
It gives the owner read, write and execute, and gives the group and others read and execute only.
What is the difference between 644 and 755?
644 allows read and write for the owner and read-only for others with no execute, while 755 adds execute permission needed for directories and scripts.
How are the permission numbers calculated?
Each digit sums read (4), write (2) and execute (1) for owner, group and others respectively.