Chmod Calculator
Convert Unix file permission symbols (e.g., rwxr-xr-x) to numeric mode (e.g., 755) and vice versa. Understand permission bits and calculate octal values.
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How to use this tool?
- 1 Enter the requested data in the fields above carefully.
- 2 Click the calculate button to process the information instantly.
- 3 Analyze the detailed result and the formula explanation presented below.
- 4 You can print, share, or even embed the calculator on your own site for free.
Unlike traditional static calculators, our tools adapt to specific user needs. They include detailed explanations of the formulas used, ensuring transparency in results. Furthermore, our design is focused on user experience, eliminating distractions and focusing on what really matters: your data and conclusions.
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Frequently Asked Questions
Chmod (change mode) is a Unix command that changes the permissions of a file or directory. Permissions define who can read, write, or execute a file.
Symbolic permissions consist of three groups of three characters: owner (rwx), group (r-x), and others (r-x). Each character indicates read (r), write (w), execute (x), or no permission (-).
Numeric permissions are three digits (0-7). Each digit sums the permissions: 4 for read, 2 for write, 1 for execute. For example, 755 means owner has rwx (7), group has r-x (5), others have r-x (5).