What is Number Base Converter?
The Number Base Converter lets you convert numbers between binary, octal, decimal, and hexadecimal formats. This is especially useful for developers, students studying computer science, or anyone working with low-level data formats. Enter a number in any base and see the equivalent in all four bases at once.
How to Use
Enter a number in the input field.
Select the base of the number you entered (binary, octal, decimal, or hex).
See the converted values in all four number bases instantly.
Why Use This Tool?
Switching between number bases by hand is tedious and error-prone. This tool does it instantly and shows all four bases at once so you can compare. It runs in your browser with zero dependencies - no sign-up, no tracking.
FAQ
Binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16).
Yes. The tool handles numbers within the range supported by JavaScript, which covers most practical use cases.
Yes. Developers regularly need to convert between hex, binary, and decimal when working with colours, memory addresses, bitwise operations, and network protocols.