Number Base Converter

Convert numbers between binary, octal, decimal, and hexadecimal systems.

Number Base Converter

A number base converter translates values between different numeral systems such as binary, octal, decimal, and hexadecimal. These conversions are fundamental in computer science, digital electronics, and programming, where data is stored and processed in binary but often displayed in more human-readable formats.

Understanding number bases helps developers debug low-level code, work with memory addresses, define colors in web design, and interpret network protocols. While decimal (base 10) is the system we use daily, computers operate in binary (base 2), and hexadecimal (base 16) provides a compact representation of binary data.

How it works

To convert from any base to decimal: multiply each digit by its base raised to its positional power and sum the results. For example, binary 1011 = 1×2³ + 0×2² + 1×2¹ + 1×2⁰ = 11 in decimal. To convert from decimal to another base, repeatedly divide by the target base and collect remainders.

Use cases

  • Converting between binary, hex, and decimal for programming tasks
  • Working with hexadecimal color codes in web design and CSS
  • Debugging memory addresses and bitwise operations in low-level code
  • Understanding and interpreting network packet data and IP addresses

Related Calculators