🎨 Hex Calculator
Hexadecimal packs binary into a compact base-16 form: digits 0–9 plus letters A–F, where each position is worth sixteen times the one to its right. Programmers meet it in color codes, memory addresses and Unicode points.
Type two hex numbers, pick the operation, and you get the answer in both hexadecimal and decimal — no manual base conversion needed.
How to use this calculator
Type two hexadecimal numbers using digits 0-9 and letters A-F, pick an operation, and press Calculate.
- Type the first hexadecimal number, using digits 0-9 and letters A-F in either case.
- Choose the Operation: add, subtract or multiply.
- Type the second hexadecimal number.
- Press Calculate and read the answer in hexadecimal, with the decimal equivalent shown underneath.
Frequently asked questions
What does this hex calculator compute?
It adds, subtracts and multiplies hexadecimal (base-16) numbers, the system programmers use for memory addresses and color codes. Answers appear in hex and in decimal.
What counts as a valid hexadecimal number?
Digits 0-9 and letters A-F, where A=10 through F=15, in upper or lower case. Each position is worth 16 times the one to its right, so 1F equals 16 + 15, which is 31 in decimal.
Can you show a worked example?
Multiply 10 by 10 in hex. Each is 16 in decimal, 16 times 16 is 256, and 256 in hexadecimal is 100, which is what the calculator shows.
Where is hexadecimal actually used?
In web color codes like #FF5733, in memory addresses, in Unicode code points, and anywhere programmers want a compact way to write binary data.