Number Base Converter - Free Online | ToolXHub
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About this tool
Number Base Converter is a free online math tool. Convert between binary, octal, decimal, hex. Solve calculations and learn with ease. It runs entirely in your browser — no download or sign-up needed.
Enter numbers, select source and target binaries, and the tool immediately converts and displays the results. Supports base 2-36, common ones are binary (0/1), octal (0-7), decimal (0-9) and hexadecimal (0-9/A-F). You can also customize the base, such as base 12 or base 20.
Conversion principle: Numbers in any binary are first converted to decimal (weighted expansion and summation), and then converted from decimal to target binary (divide-base method). For example, binary 1010 to decimal: 1 x 2³ + 0 x 2² + 1 x 2 ³ + 0 x 2 = 10.
Programmers often use hexadecimal to represent color values (#FF0000 red) or memory addresses, and binary for bit operations. The tool displays the conversion process in real time to help understand binary concepts.
The binary conversion tool supports mutual conversion between binary, octal, decimal, and hexadecimal, and can customize the binary range.