Number Base Converter
Convert between binary, decimal, hex and octal
How to Use Number Base Converter
- 1Enter a number in the input field.
- 2Select the base of your input number (binary, octal, decimal or hexadecimal).
- 3All four conversions appear instantly below.
- 4Copy any value using the Copy button.
About Number Base Converter
Convert numbers between binary (base 2), octal (base 8), decimal (base 10) and hexadecimal (base 16) formats instantly. Enter a number in any base and see the equivalent value in all four bases simultaneously. Useful for programmers, computer science students and anyone working with different number systems.
Frequently Asked Questions
What is hexadecimal?
Hexadecimal (base 16) uses digits 0-9 and letters A-F to represent values. It is commonly used in computing to represent colors (#FF5733), memory addresses and binary data in a compact form.
How do I convert binary to decimal manually?
Each binary digit represents a power of 2 from right to left. For example, 1010 in binary = 1x8 + 0x4 + 1x2 + 0x1 = 10 in decimal.
Does this support negative numbers?
This tool works with positive integers. Negative number representation varies by context (two's complement, sign-magnitude) so it is not supported to avoid ambiguity.