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Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal instantly. Type in any base to see the rest update live.
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Frequently Asked Questions
What number bases can I convert between?
Binary (base 2), Octal (base 8), Decimal (base 10), and Hexadecimal (base 16). Type a value in any field and the others update instantly.
Why is hexadecimal used in computing?
Hex is a compact way to represent binary — each hex digit maps to exactly 4 binary bits, so it's widely used for memory addresses, color codes, and byte values.
Does this work for very large numbers?
It uses standard 64-bit number parsing, so it's accurate for everyday values. Extremely large numbers beyond safe integer limits may lose precision.