Hex to Octal Converter | Convert Hexadecimal to Octal Numbers

Free online hexadecimal to octal converter. Convert hex to octal numbers instantly with step-by-step explanations. Includes conversion tables and examples.

Hexadecimal to Octal Converter

Input

From

Character Encoding

Common Examples

Hex: FF

Octal: 377

Binary: 11111111

Maximum 8-bit value

Hex: A5

Octal: 245

Binary: 10100101

Common checkered pattern

Hex: 100

Octal: 400

Binary: 001000000

Power of 16

Hex: 1F

Octal: 37

Binary: 00011111

5-bit maximum

Conversion Reference Table

Hex	Octal	Binary
0	000	0000
1	001	0001
2	002	0010
3	003	0011
4	004	0100
5	005	0101
6	006	0110
7	007	0111
8	010	1000
9	011	1001
A	012	1010
B	013	1011
C	014	1100
D	015	1101
E	016	1110
F	017	1111

How Hex to Octal Conversion Works

Two-Step Process

Convert hex to binary (each hex digit becomes 4 bits)
Group binary digits into sets of three and convert to octal

Example: Converting "A5" to Octal

1. Hex to binary:
• A = 1010
• 5 = 0101
• Combined: 10100101
2. Group into threes: 010 100 101
3. Convert each group to octal: 2 4 5
4. Final octal: 245

Conversion Tips

Quick Tips

Memorize hex to binary conversions
Practice grouping binary in threes
Remember octal uses only 0-7
Add leading zeros when needed

Common Patterns

F → 017 (maximum 4-bit value)

8 → 010 (single octal digit)

10 → 020 (hex 16)

FF → 377 (maximum 8-bit value)

Practice Problems

Convert: 3F₁₆

Answer: 077₈

Convert: 80₁₆

Answer: 200₈

Convert: FF₁₆

Answer: 377₈

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