ONLINE CONVERSION TOOL

Octal to Hexadecimal Converter

Convert octal numbers to hexadecimal quickly and accurately.

FREE NUMBER BASE TOOL

Convert Octal to Hexadecimal

Enter a number and get an accurate result instantly.

Hexadecimal result—

Numbers may include a leading minus sign. Hexadecimal accepts A–F.

About Octal to Hexadecimal conversion

Octal and hexadecimal are both compact ways to express binary data, but their digit boundaries differ. Converting through binary preserves every bit without loss.

How to convert Octal to Hexadecimal

Enter a valid octal number in the calculator above for an instant result. To understand the calculation by hand, follow these steps:

  1. Convert each octal digit into a three-bit binary group.
  2. Regroup the binary value into four-bit groups from the right.
  3. Translate each four-bit group into a hexadecimal digit.

Octal to Hexadecimal conversion example

Example: 72₈ → 3A₁₆. 72 becomes 111010 in binary, or 0011 1010 after padding. Those groups are 3 and A.

Use the calculator to verify the example, then try a value of your own. It accepts upper- and lowercase letters for hexadecimal input.

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