Number Base Converter
Convert numbers between different bases.
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Frequently Asked Questions
What is hexadecimal?
A base-16 number system using digits 0-9 and letters A-F. Commonly used in computing for colors (#FF0000) and memory addresses.
How do I convert hex to decimal?
Each hex digit represents a power of 16. FF = 15×16 + 15 = 255.
What is binary?
A base-2 number system using only 0 and 1. It's the fundamental language of computers.
Why is octal used?
Octal (base-8) was historically used in computing and is still used in Unix file permissions (e.g., chmod 755).
What is a nibble?
A nibble is 4 bits (half a byte). Each hex digit represents exactly one nibble, making hex convenient for binary representation.