Chmod Calculator
Toggle Unix file permission bits and see the matching numeric (755) and symbolic (rwxr-xr-x) values.
| Read (4) | Write (2) | Execute (1) | Value | |
|---|---|---|---|---|
| Owner | 6 | |||
| Group | 4 | |||
| Others | 4 |
Octal
644Symbolic
rw-r--r--chmod command
chmod 644 fileParse from octal
What the bits mean
- Owner / Group / Others — three classes that get separate permissions.
- r (4) read · w (2) write · x (1) execute.
- The fourth digit handles setuid (4), setgid (2), and the sticky bit (1).
You might also like
- Number Base ConverterConvert numbers between binary, octal, decimal, hex, and arbitrary bases 2–36.
- Timestamp ConverterConvert between Unix timestamps, ISO dates, and local time.
- .env File ParserParse a .env file into JSON, with quoted-value and export support — and warn about anything fishy.
- .gitignore BuilderPick languages, frameworks, build tools, editors and OS — get a deduped .gitignore.