What is Number Base Converter?
Convert integers between binary, octal, decimal, hexadecimal and any arbitrary base from 2 to 36, all at once. Enter a value indicating its input base and instantly get its representation in all the others, ready to copy.
It uses arbitrary-precision arithmetic (BigInt), so it works correctly even with huge numbers that would overflow a normal integer. It's useful for low-level programming, bit manipulation, hexadecimal colors, or any task that crosses number systems.
Frequently asked questions
Is it free?
Yes, all NewKit tools are completely free.
Is my data sent to a server?
No. Processing happens 100% in your browser, so it is safe even for sensitive data.