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Number Base Converter
ConverterConvert decimal, binary, hexadecimal, and octal numbers instantly.
About This Tool
Binary (base 2) uses only 0 and 1 — the foundation of all computing. Hexadecimal (base 16, digits 0–9 and A–F) compactly represents binary data; each hex digit equals exactly 4 bits. Octal (base 8) was used in early computing systems.