Developer

Chmod Calculator

Translate Unix file permissions between octal (755) and symbolic (rwxr-xr-x) notation. See owner, group, and others breakdown instantly.

Octal permissions

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Frequently asked questions

Is this tool free?+

Yes. Every Utilio utility is free with no sign-up, usage limits, or paywalls.

Do you store my data?+

No. Processing happens entirely in your browser. Your input never leaves your device.

Can I use this tool offline?+

Yes. Once the page loads, most tools continue working without an internet connection.