Chmod Calculator
// Calculate Unix file permissions (rwx, octal, symbolic)
| Read | Write | Execute | |
|---|---|---|---|
| Owner | |||
| Group | |||
| Other |
Octal
755
Symbolic
rwxr-xr-x
rwxr-xr-x — Directories, executables
rw-r--r-- — Regular files
rw------- — Private files
rwx------ — Private directories
rwxrwxrwx — Full access (avoid)
r--r--r-- — Read-only
#About Chmod Calculator
Free online chmod calculator. Convert between rwx, octal, and symbolic Unix file permission formats with an interactive permission grid. This tool runs entirely in your browser — your data is never sent to a server. Just paste your input, get instant results, and copy with one click. No sign-up or installation required.
#FAQ
What does chmod 755 mean? ▾
chmod 755 sets read, write, and execute permissions for the owner, and read and execute permissions for the group and others. In symbolic notation this is rwxr-xr-x. It is the standard permission for directories and executable files.
What is the difference between octal and symbolic chmod notation? ▾
Octal notation uses three digits (e.g., 644) where each digit represents owner, group, and other permissions as a sum of read (4), write (2), and execute (1). Symbolic notation uses letters like rwxr--r-- to represent the same permissions in a human-readable format.
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<iframe src="https://www.browserutils.dev/embed/chmod-calculator" width="100%" height="500" frameborder="0" title="Chmod Calculator"></iframe>