Carbon Calculator

An interactive app that makes the complex process of analysing business's greenhouse gasses simple.

UX/UI Design

Personal Project

Problem Analysis

More and more businesses are interested in their carbon emissions and how they can practice a more renewable form of business. Doing an extensive carbon emission analysis requires extensive knowledge, time and labour.

Design process

During this project I aimed to develop my prototypes digitally as it would be easier for me to user test. I also learned Figma to develop the prototypes.


For this project I first did research into conventional GHG emissions calculations. Usually these calculations start with analysing the transportation within the business and its energy use.

These are the so called Scope 1 & 2 emissions following the GHG protocol. Scope 3 emissions cover the remaining emissions that account for the emissions that are generated from suppliers to the emissions that are generated when the goods or services are used and disposed of. Doing a full lifecycle analysis, meaning covering scope 1,2 and 3 emissions, can be cumbersome and sometimes difficult to complete. Several tools and software are available making this complex problem easier. However, none of them seemed to have an app to make it more accessible for businesses to analyse its emissions.

Ideation & User tests

The first 2 prototypes copied the scope definition of the GHG protocol. However, after user testing it was discovered that these definitions created a hurdle for small business in understanding the process. My aim with the second iteration was to create a visual overview of the bought goods and produced goods. This was found to be distracting and unclear. Furthermore, several definitions could be improved upon.

The layout of the first prototype was preferred as it allowed for better overview of the process, also the help icons was seen as a benefit when questions were raised.  Also the sharing options and asking data from suppliers & customers was seen as a big plus. To make it more intuitive the Scope definitions were dropped and 5 sections were made to make the processes easier to understand.

Final Concept

To make this process easier the Carbon Calculator aims to simplify calculating business emissions by allowing these calculations to be done via an app instead of extensive web- or desktop applications.

The information you put in in stored in 4 different categories: Energy, Transport, Suppliers and Products.

A progress bar indicates which step you are in during the calculations.

Products from supplies and goods or services that you produce are easy to add and edit.

Information on the data is under the touch of a button.

Carbon Calculator Prototype

Interested? Try it out!

This is an interactive prototype you can use your mouse or finger to navigate the prototype. If you click on the screen and the button lights up blue, you can interact with it. You can use the app in full screen mode.
Note, the function of this prototype is to emulate the user experience, not to do the calculations itself.

Press F for full screen mode, ESC to exit.


Click the button bellow

Carbon Calculator Prototype