Number Base Converter (Binary / Hex / Decimal)

Convert numbers between binary, hexadecimal, and decimal number systems instantly with real-time updates.

Binary numbers use only 0 and 1. Hexadecimal uses 0-9 and A-F. Decimal uses 0-9.

Conversion Results

Binary (Base 2)
Enter a number to see binary result
Decimal (Base 10)
Enter a number to see decimal result
Hexadecimal (Base 16)
Enter a number to see hex result

Quick Examples

Frequently Asked Questions

What number bases does this converter support? ▶
This converter supports three commonly used number systems: Binary (base-2), Decimal (base-10), and Hexadecimal (base-16). You can convert numbers from any of these bases to the other two.
How are hexadecimal numbers represented? ▶
Hexadecimal uses digits 0-9 and letters A-F (or a-f), where A=10, B=11, C=12, D=13, E=14, F=15. Our converter automatically handles both uppercase and lowercase letters.
What's the maximum number size this tool can handle? ▶
The tool can handle numbers up to 2^53 - 1 (approximately 9 quadrillion or 9,007,199,254,740,991) safely due to JavaScript's Number.MAX_SAFE_INTEGER limit. Beyond this, precision may be lost.
How do I input negative numbers or fractions? ▶
This converter currently supports only positive integers. For negative numbers or fractions, you would need to use two's complement representation (for binary) or other specialized formats.
Why would I need to convert between number bases? ▶
Different bases are used in different contexts: Binary for computer systems and digital electronics, hexadecimal for memory addresses and color codes in programming, and decimal for everyday mathematics and finance.