Hexadecimal Arithmetic

This hex calculator performs addition, subtraction, multiplication, and division on hexadecimal operands, then reports the result in hex, decimal, binary, and octal. Each hex digit stands for exactly four binary bits, which is why hex is the natural shorthand for binary data.

Reading the Conversions

0x2A equals 42 in decimal: 2×16 plus 10. Binary 101010 and octal 52 encode the same value. Negative results are displayed with a minus sign, and division uses integer truncation like most low-level operations.

Where Hex Appears

Memory addresses and debuggers, CSS colors (#RRGGBB), MAC addresses, opcodes, and checksums all use hex. Converting between bases by hand is tedious — this tool makes the round trips instant.