Hexadecimal to Octal Converter
Type a Hexadecimal number and get the Octal equivalent instantly, calculated right in your browser as you type.
How it works
- 1
Type the number
Enter a valid Hexadecimal value.
- 2
See it update instantly
The Octal result recalculates the moment you type — no button to press.
- 3
Copy the result
Use the converted value wherever you need it. Nothing is saved or sent anywhere.
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Frequently asked questions
Yes, completely free and unlimited. There is no sign-up and no daily cap.
How Hexadecimal and Octal relate
Hexadecimal and Octal are different ways of writing the same number, using a different base (radix). This tool converts between them exactly, digit by digit, with support for very large numbers.
The whole calculation runs on your device the instant you type — nothing is uploaded, nothing is sent to a server, and the page keeps working even offline once it has loaded.