Chmod Calculator — Linux File Permissions
Calculate Linux/Unix file permissions visually online. Toggle checkboxes or enter a numeric value to see permissions.
| Read (4) | Write (2) | Execute (1) | |
|---|---|---|---|
| Owner | |||
| Group | |||
| Others |
755
rwxr-xr-x
chmod 755 filename
Common Presets
How to use the chmod calculator
- Click checkboxes for read, write, and execute permissions for owner, group, and others.
- See the numeric value (e.g. 755) and symbolic notation (e.g. rwxr-xr-x) update instantly.
- Or enter a number like 644 to see the corresponding permissions checked.
- Copy the chmod command by clicking on it.
Common chmod values
- 755 (rwxr-xr-x) — standard for web directories and executable scripts.
- 644 (rw-r--r--) — standard for regular files, config files.
- 600 (rw-------) — private files, SSH keys, .env files.
- 777 (rwxrwxrwx) — full access for everyone (use with caution).
- 700 (rwx------) — owner-only access for private scripts.
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