Chmod Calculator
Build Linux file permissions with checkboxes and get the chmod number (755, 644…) and symbolic notation. Free.
✓ 100% free ✓ No sign up ✓ Runs in your browser — nothing uploaded
Numeric
755
Symbolic -rwxr-xr-x
Command chmod 755 filename
How to use Chmod Calculator
- 1Enter your numbers or dates.
- 2Results update instantly as you type.
- 3Copy the main result with one click.
Questions
Is Chmod Calculator free?
Yes. Chmod Calculator is 100% free with no limits, no watermark, no sign up and no email required.
Is my data sent anywhere?
No. Everything is calculated locally in your browser. Nothing you type is sent to or stored on any server.
Does Chmod Calculator work on my phone?
Yes. Chmod Calculator works in any modern browser on iPhone, Android, Windows, Mac, Linux and Chromebook. No app or install needed.
Do I need to create an account?
Never. There is no sign up, no login, no email and no paywall. Just open the page and use it.
How accurate is it?
Calculations use standard formulas with full floating-point precision. For medical, legal or financial decisions, please confirm with a professional.