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Octal Converter

Convert octal numbers to decimal, hexadecimal, and binary.

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How to use Octal Converter

  1. Enter an octal number.
  2. View the decimal, hexadecimal, and binary equivalents.
  3. Copy individual values.

What is Octal Converter?

Octal (base 8) is a numeral system using digits 0-7, commonly used in Unix file permissions.

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FAQ

What is octal used for?
Octal is commonly used in Unix/Linux file permissions and computing.
How do I read octal file permissions?
Each digit represents permissions: 7=rwx, 6=rw-, 5=r-x, 4=r--, 0=---.
Can I prefix with 0o?
Yes, the tool accepts the 0o prefix.

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Author

NK
Prof. Noah Klein"The Privacy Guardian"

Cybersecurity Researcher & Privacy Advocate

Professor Klein holds a PhD in Information Security and has testified before EU parliamentary committees on data privacy legislation. He builds encryption tools for journalists, audits web applications for security flaws, and believes that privacy is not a feature but a fundamental right. His research has been cited in Wired, Nature, and The Guardian, and he advises nonprofits on responsible data stewardship.

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