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From transport to food to energy — see how your everyday choices compare in terms of CO2 emissions. Interactive calculators with data from DEFRA, EPA, IPCC, and peer-reviewed research.
Making climate-friendly choices starts with understanding the carbon cost of your options. Our comparison tools use verified data from authoritative sources — including DEFRA, EPA, IPCC, and peer-reviewed lifecycle assessments — to show you exactly how different choices compare in terms of CO2 emissions.
Whether you're deciding between driving and taking the train, choosing between beef and plant-based protein, or weighing up a heat pump versus a gas boiler, our interactive calculators let you adjust inputs like distance, country, and frequency to see personalized results.
Every comparison includes detailed methodology, source citations, and answers to commonly asked questions — so you can trust the numbers and make informed decisions.