Binary / Decimal / Hex / Octal Converter
Convert numbers between binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16).
Results:
Binary
Octal
Decimal
Hexadecimal
What is Number Base Conversion?
Numbers can be represented in different bases (radixes). Binary (base 2) uses 0–1, octal (base 8) uses 0–7, decimal (base 10) uses 0–9, hexadecimal (base 16) uses 0–9 and A–F.
What is it used for?
- Programming: Hex for colors (#FF0000), memory addresses; binary for bitwise ops
- Networking: IP addresses in hex; subnet masks in binary
- File formats: Binary/hex for binary file inspection
- Learning: Understand how computers represent numbers
How it works
Enter a number and select its base. The tool converts it to binary, octal, decimal, and hexadecimal. All bases update in real time.