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Number Base Converter - Binary, Hex, Decimal
Free number base converter. Convert between binary, decimal, hexadecimal, and octal number systems instantly.
Number Base Converter
Convert between number systems
Conversions
Enter your values to see results
and click the "Calculate" button
Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal systems. Essential for programming, computer science, and digital electronics.
Number Bases
Decimal 255 = Binary 11111111 = Hex FF = Octal 377
Each base uses different digits. Binary: 0-1, Octal: 0-7, Decimal: 0-9, Hex: 0-9 + A-F.
Frequently Asked Questions
Why is hexadecimal used in computing?
Hex is compact (1 hex digit = 4 binary bits) and human-readable. FF is easier to read than 11111111.
How do I convert manually?
To decimal: multiply each digit by base^position, sum up. From decimal: repeatedly divide by target base, collect remainders.
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