Hex Calculator

Hex Calculator is a simple, developer-friendly tool that lets you perform fast and accurate hexadecimal arithmetic right inside your Opera browser.

With Hex Calculator, you can:

Add, subtract, multiply, or divide hexadecimal numbers instantly.

View both Hex and Decimal results in real-time.

Copy outputs easily to your clipboard.

Use BigInt support for very large numbers.

Enjoy a clean, dark-themed, distraction-free interface.

How to use:

Click the extension icon.

Enter your two hexadecimal values (with or without “0x”).

Choose an operation (+, −, ×, ÷).

Click Calculate to get your result instantly.

Division includes both quotient and remainder, perfect for bitwise or address computations.