Chmod Calculator
Convert Unix permissions between numeric (755) and symbolic (rwxr-xr-x) notation.
Compare Your Options And Get Clear Answers
Convert Unix permissions between numeric (755) and symbolic (rwxr-xr-x) notation.
Chmod Estimator
Enter your numbers below for an instant estimate.
How It Works
Key concepts behind this calculator
Enter Values
Fill in each field with your own numbers.
Calculate
Results update as you change the inputs.
Review
Read the breakdown and the explanation.
Adjust
Change values to compare scenarios.
Chmod Quick Guide
Typical values for reference.
| Mode | Symbolic | Typical use | Command |
|---|---|---|---|
| 644 | rw-r–r– | Files | chmod |
| 755 | rwxr-xr-x | Programs and folders | chmod |
| 600 | rw——- | Private keys | chmod |
| 777 | rwxrwxrwx | Avoid | chmod |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Chmod Calculator FAQ
Answers to common questions about this calculator.
Owner can read, write and execute; others read and execute.
No, it gives everyone full access.
Read=4, write=2, execute=1, summed for owner, group, others.
It is an estimate based on the inputs you enter. Check real quotes, labels or official guidance for important decisions.