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Decimal
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Binary
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Octal
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Hexadecimal
Frequently Asked Questions
How do I convert between binary, decimal and hexadecimal?
Each base represents the same value with a different set of digits. Binary uses 0–1, octal 0–7, decimal 0–9 and hex 0–9 plus A–F. Enter a value in any base and the converter shows all four.
Convert numbers between binary, octal, decimal and hexadecimal.