Unix Chmod Calculator
Toggle read, write, and execute permissions for Owner, Group, and Others to generate the octal and symbolic notation.
Permission Value
755
rwxr-xr-x
chmod 755 filename
| Role | Read (4) | Write (2) | Execute (1) | Octal |
|---|---|---|---|---|
| Owner | 7 | |||
| Group | 5 | |||
| Others | 5 |
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Unix Permissions
Linux/Unix permissions use a 3-digit octal notation. Each digit (0-7) represents the sum of Read (4), Write (2), and Execute (1) for Owner, Group, and Others respectively. Common values: 755 (owner full, others read/execute), 644 (owner read/write, others read only), 777 (full access to all).