The CO2 Calculator for the "Klimaschutz Stiftung Baden-Württemberg" is a versatile tool designed to calculate, reduce, and offset carbon emissions. It offers users a comprehensive overview of their individual carbon footprint in various areas, helping identify opportunities for emission reduction. The calculator, built as a React microservice, involved two developers managed by rsm Integral and integrates external APIs from atmosfair and myclimate. The donation form is provided by Fundraising Box.

The tool serves different scenarios, including a default version for the website, landing pages for small donations, integration with the Baden-Württemberg app, and a specialized flight calculator for students registered to BWS-World. Each scenario caters to specific needs, offering customized calculators and themed checkout screens.