Convert 755
Input
755Example output
rwxr-xr-xUnix Permissions Calculator
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About this tool, examples & FAQ
Convert standard and special Unix permission bits between octal and symbolic notation.
Key facts
| Accepted forms | 755, 0755, 4755, rwxr-xr-x, or -rwxr-xr-x |
|---|---|
| Special bits | setuid, setgid, and sticky |
| System changes | None; chmod is never executed |
| Processing | Local Web Worker; input is not uploaded |
| Execution deadline | 1 s |
How to use
- Choose Octal to Symbolic or Symbolic to Octal.
- Enter a mode such as 755, 4755, rwxr-xr-x, or -rwsr-xr-x.
- Choose whether octal output should include a leading zero.
- Run the conversion and copy the resulting notation; no system command is executed.
Example
Edge cases
Special bits
setuid, setgid, and sticky bits use s, S, t, or T in symbolic form.
Optional file-type prefix
A ten-character symbolic mode may include a leading file-type character, which is ignored during permission conversion.
Access control lists
ACL markers and extended attributes are outside this calculator's scope and are not represented by three or four octal digits.
How it works
- Validates the selected notation without executing or interpreting it as a shell command.
- Maps read, write, and execute bits for owner, group, and other between symbolic and octal forms.
- Preserves setuid, setgid, and sticky bits through s, S, t, and T positions.
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Frequently asked questions
Does this change file permissions?
No. It only converts notation and never executes chmod or any pasted command.
Is 0755 different from 755 here?
No. Both represent the same permission bits; the leading zero is a conventional signal that the number is octal.
What do uppercase S and T mean?
They indicate that a special bit is set while the corresponding execute bit is not set.
References
- POSIX File Modes — Unix file permission and special mode bits