Binary / Hex / Octal Converter
Enter any number in decimal, binary, hex, or octal format. The converter shows all four representations instantly.
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Frequently Asked Questions
What is hexadecimal used for?
Hex is used in programming for memory addresses, color codes (#FF5733), and representing binary data compactly. Every two hex digits represent one byte.
How do I convert binary to decimal?
Multiply each binary digit by 2 raised to its position power and sum them. Or use this tool — it handles the math instantly.