Hex to Octal Converter

Convert hexadecimal values to octal by expanding to binary and regrouping into three-bit sets, with step-by-step results.

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Enter a valid hexadecimal number Please enter a hexadecimal number to convert.

Also in Number Theory

Number Systems

Hexadecimal to octal: convert base-16 numbers to base-8

The hex to octal converter translates hexadecimal (base-16) values into octal (base-8) notation. Enter a hex string and see the octal result with an intermediate binary expansion shown step by step.

How the conversion works

There is no direct digit-by-digit mapping between hex and octal, so the standard approach uses binary as an intermediate step. First expand each hex digit into four binary bits, then regroup the full binary string into sets of three bits and translate each group to an octal digit.

When to use this conversion

Converting hex to octal is useful when moving between hex-oriented tools (debuggers, hex editors) and octal-oriented contexts (Unix permissions, some legacy system displays).

Frequently asked questions

Why is binary used as an intermediate step?

Hex digits group neatly into four bits and octal digits into three bits. Binary is the common ground that lets you regroup between the two systems.

Is there a shortcut without binary?

You can convert hex to decimal first and then decimal to octal, but the binary-intermediate method is usually faster and less error-prone.

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