Number Base Converter Online Free โ Binary, Octal, Decimal, Hex
Free online number base converter. Convert between decimal, binary, octal, and hexadecimal instantly. Supports integers and fractions with step-by-step conversion.
Type a number in any field and the other bases will be calculated automatically.
About Number Base Systems
Different number base systems are used in computing: Binary (base 2) for machine-level operations, Octal (base 8) for Unix permissions, Decimal (base 10) for everyday use, and Hexadecimal (base 16) for memory addresses, colors, and compact binary representation.
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How to Use
- Enter a number in any base (binary, octal, decimal, or hex)
- All other base conversions update automatically
- Copy any converted value with the copy button
Common Use Cases
- Converting between hex and binary for programming
- Working with RGB color codes
- Understanding IP addresses and subnet masks
- Debugging low-level data formats