This is a Simple Web App called Simple and Intelligent Standard Calculator. This HTML source code was developed using HTML, CSS, and Javascript (jQuery).

  • By Yogesh Selvarajan
  • Last update: Jan 21, 2022
  • Comments: 0




This is a Simple Web App called Standard Calculator. This HTML source code was developed using HTML, CSS, and Javascript (jQuery). I know that everyone knows how the calculator works and I'll just explain the other features of this simple HTML Project. The calculator app is able to save the calculation history and this feature uses the web browser's local storage which is means that there are no database servers required to run this project. I am sharing the source code to help others especially those who are students that about to start learning to develop an application. You can also simply integrate this feature into your website that needs a calculator feature. The calculator panel is located at the bottom right of the browser's window like the common chatbox panel of a website.

Allowed Keyboard keys:

  • Number keys from 0-9
  • Enter Key
  • Dot (.) Key for the decimal point.


  • Text fiend for calculation
  • Buttons
    • Numbers 0-9
    • Calculation Operators ( +, -, /, and *)
    • History Panel
    • Error Trapping Popup

IDE used:

  1. WebStorm 2021.3.1 (Professional Edition)

How to Run:

  1. Fork it.
  2. Click on Clone or download button in top right corner.
  3. Download zip.
  4. Extract the source code zip file
  5. Locate the index.html file from the extracted source code folder.
  6. Open the HTML file in a browser.
  7. That all, your calculator is ready for use!

The Simple Calculator was created using HTML,CSS,JS programming languages. I hope that this system can help you to what you are looking for.

Enjoy Coding!!

If you have trouble with this project, please tell me about it, and I'll make this project better. If you like this tutorial, please give it a star.