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Hazuu Tools

Octal to Hex

Convert octal numbers to hexadecimal — enter, convert, and copy instantly.

Input Octal
Output Hex
Hex output will appear here...
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About Octal to Hex Converter

Octal to hexadecimal conversion translates base-8 numbers (using digits 0-7) into the base-16 numbering system (using digits 0-9 and letters a-f). Octal notation groups three binary bits per digit while hex groups four, making both systems popular shorthand for binary data. Converting between them is useful in computing contexts like Unix file permissions, memory addresses, and low-level programming where switching between compact binary representations is a common task.

This free online converter handles everything from single octal digits to arbitrarily large octal numbers using BigInt for full precision. You can convert multiple values at once by entering each on a separate line. All processing runs entirely in your browser — no data is ever sent to a server, so your input stays completely private. No sign-up, no ads, just instant octal-to-hex conversion.

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How to Use

01

Enter Octal Number

Type or paste your octal number into the input area. You can enter multiple numbers on separate lines for batch conversion. Only digits 0-7 are accepted.

02

Convert

Click "Convert" to calculate the hexadecimal equivalent of your octal input. Each line is converted independently.

03

Copy Result

Copy the hex result to your clipboard with one click using the copy button in the toolbar.

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Frequently Asked Questions

What is octal to hex conversion? expand_more
Octal to hex conversion translates a base-8 number (using digits 0-7) into a base-16 number (using digits 0-9 and letters a-f). For example, octal 377 equals hex ff, and octal 1750 equals hex 3e8. Both systems are shorthand for binary — octal groups three bits per digit while hex groups four.
How does octal to hex conversion work? expand_more
The octal number is first converted to its numeric value, then re-expressed in base 16. Internally, the tool uses parseInt(octal, 8).toString(16) for standard numbers and BigInt for very large values to maintain full precision.
Can this tool handle very large octal numbers? expand_more
Yes. For octal numbers longer than 18 digits (which exceed the precision of standard JavaScript numbers), the tool automatically uses BigInt to perform the conversion with full accuracy. There is no practical limit on the size of octal input.
Is my data secure? expand_more
Absolutely. All conversion happens entirely in your browser using client-side JavaScript. No data is sent to any server, so your octal input and hexadecimal output remain completely private.