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Hexadecimal to Octal

Convert hexadecimal numbers to octal. Useful for cross-referencing between different number systems in programming.

What is the Hexadecimal to Octal Converter?

This tool converts hexadecimal numbers (base-16) to octal numbers (base-8). Both are power-of-2 number systems commonly used in computing.

Why Convert Hex to Octal?

Hex to octal conversion helps when:

  • Working with multiple formats — different tools use different number systems
  • Cross-referencing values — comparing hex addresses with octal representations
  • Learning number systems — understanding relationships between bases

The Conversion

Convert via decimal: hex → decimal → octal, or via binary since both are power-of-2 bases.

Example: FF (hex) = 255 (dec) = 377 (oct)

How to Use

  1. Enter hex number — digits 0-9 and letters A-F
  2. View octal result — conversion happens instantly
  3. Copy the result — use wherever needed

Common Values

  • FF (hex) → 377 (octal) = 255 in decimal
  • 100 (hex) → 400 (octal) = 256 in decimal
  • A (hex) → 12 (octal) = 10 in decimal

Tips

Both hex and octal are power-of-2 bases (16=2⁴, 8=2³), making them useful shortcuts for representing binary values more compactly.

0123456789ABCDEFabcdef
0x
01234567
0o

Common Conversions

1 = 1
8 = 10
F = 17
10 = 20
FF = 377
100 = 400

Hexadecimal (Base-16)

Compact representation using 0-9 and A-F. Common in colors and memory addresses.

Octal (Base-8)

Uses digits 0-7. Historically important in computing, still used for Unix permissions.

Enter hex digits (0-9, A-F)
FF in hex = 377 in octal
Useful for comparing different number formats
Both hex and octal are power-of-2 bases
Want to learn more? Read documentation →
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