Number Base Converter

Instantly convert between the four most common number bases used in computing and mathematics: decimal, binary, hexadecimal, and octal.

❓ Frequently Asked Questions

What is hexadecimal used for? +
Hex is used in computing for colors (#FF5733), memory addresses, and encoding.
What is binary? +
Binary is the base-2 number system using only 0s and 1s, used by computers internally.