Convert Hexadecimal to Octal
Live bidirectional calculator for Hexadecimal (HEX) and Octal (OCT) with verified formula and conversion charts.
Number Bases4 units
How the Calculation Works (Radix Base Conversion)
Arbitrary-precision integer conversion using BigInt representation.
Hexadecimal to Octal Conversion Table
Precomputed values for quick reference and printing.
| Hexadecimal | Octal |
|---|---|
| 1 HEX | 1 OCT |
| 2 HEX | 2 OCT |
| 4 HEX | 4 OCT |
| 8 HEX | 10 OCT |
| A HEX | 12 OCT |
| F HEX | 17 OCT |
| 10 HEX | 20 OCT |
| 20 HEX | 40 OCT |
| 40 HEX | 100 OCT |
| 64 HEX | 144 OCT |
| 80 HEX | 200 OCT |
| FF HEX | 377 OCT |
| 100 HEX | 400 OCT |
| 200 HEX | 1000 OCT |
| 400 HEX | 2000 OCT |
| Octal | Hexadecimal |
|---|---|
| 1 OCT | 1 HEX |
| 2 OCT | 2 HEX |
| 4 OCT | 4 HEX |
| 10 OCT | 8 HEX |
| 12 OCT | A HEX |
| 17 OCT | F HEX |
| 20 OCT | 10 HEX |
| 40 OCT | 20 HEX |
| 100 OCT | 40 HEX |
| 144 OCT | 64 HEX |
| 200 OCT | 80 HEX |
| 377 OCT | FF HEX |
| 400 OCT | 100 HEX |
| 1000 OCT | 200 HEX |
| 2000 OCT | 400 HEX |
About Hexadecimal (HEX)
The Hexadecimal system is a positional numeral system with radix 16.
History: Used extensively in modern computing systems.
Common Uses: Data processing, hardware registers, and digital logic.
About Octal (OCT)
The Octal system is a positional numeral system with radix 8.
History: Used extensively in computer architecture.
Common Uses: Software development, memory addressing, and data encoding.
โ Frequently Asked Questions
What is the difference between Hexadecimal and Octal?
Hexadecimal (HEX) and Octal (OCT) are positional numeral systems with different radix bases. In computer architecture, values are converted between bases using arbitrary-precision binary/hex representations.
How do I convert Hexadecimal to Octal?
Parse each digit of the Hexadecimal input according to its base powers, then repeatedly divide or format the integer into the target Octal radix digits.