Hex Calculator

Perform arithmetic operations on hexadecimal (base 16) numbers. Add, subtract, multiply, divide hex values with results in multiple formats.

The Hex Calculator performs arithmetic operations on hexadecimal (base 16) numbers. Hexadecimal uses digits 0-9 and letters A-F, and is widely used in programming for colors, memory addresses, and data representation.

Enter the first hexadecimal number (using 0-9 and A-F)
Select an arithmetic operator: +, −, ×, ÷, or %
Enter the second hexadecimal number
Click Calculate or press Enter to see results in all number bases

Full arithmetic operations: addition, subtraction, multiplication, division, modulo
Results displayed in binary, octal, decimal, and hexadecimal
Support for large numbers using BigInt
Case-insensitive input (both 'a' and 'A' are valid)
Quick examples for common hex calculations

What is hexadecimal?: Hexadecimal is a base-16 number system using 0-9 for values 0-9 and A-F for values 10-15. Each hex digit represents 4 binary bits. For example, FF equals 255 in decimal.
Why is hex used in programming?: Hex provides a compact way to represent binary data. One byte (8 bits) can be written as exactly 2 hex digits. It's used for colors (#RRGGBB), memory addresses, and debugging.
How do I convert hex to decimal?: Multiply each digit by its place value (powers of 16) and sum. For example: A5₁₆ = 10×16¹ + 5×16⁰ = 160 + 5 = 165₁₀.