Advanced Chmod Calculator
Convert between octal and symbolic permissions, set special bits, and generate a full chmod command.
| Role | Read | Write | Execute |
|---|---|---|---|
| Owner | |||
| Group | |||
| Others | |||
| Special | |||
Permission Interpretation
- Owner can read and write
- Group can read
- Others can read
How to Use This Calculator
Toggle the boxes for read/write/execute, choose special bits and options, or directly enter an octal or symbolic string above. The results update automatically.
Common permissions:
755 – owner: rwx, group: r-x, others: r-x (typical for executables);
644 – owner: rw-, group: r–, others: r– (typical for regular files);
775 – owner: rwx, group: rwx, others: r-x (useful for shared directories).
