Calculator

This basic calculator is a web-based tool to do simple arithmetic operations like addition, subtraction, multiplication, and division. It looks and behaves just like a regular hand-held calculator, and it's perfect for quick math calculations right in your web browser.

The calculator has buttons for the digits 0–9, basic operators like +, −, ×, ÷, an all clear key, and an equals key. Calculations are processed locally in your browser using JavaScript, so the webpage does not need to interact with a server.

The calculator also features a square root key, a percentage key and a plus/minus button to change the sign of your working entry. Once you enter numbers the AC clear key becomes a CE key so you can correct input errors.

This web-based calculator is lightweight, mobile-friendly, and you can operate it with a mouse, number pad, keyboard, or touch screen.