Decarb is a personal carbon footprint calculator that estimates your emissions across energy, transport, food, and consumption — and shows you exactly where reduction has the most impact.
The average personal footprint is 7–12 tons CO₂e per year. Without accurate measurement, effort concentrates on low-impact actions while the highest-impact sources go unaddressed. Decarb gives you the data to focus where it counts.
Answer 15 questions about your energy use, transport, diet, and purchases. We apply verified emission factors to calculate your total estimated footprint in tons CO₂e.
Your report shows estimated emissions by category, ranked by impact. No generic advice — only what is relevant to your specific profile and lifestyle.
A structured action plan with prioritised steps. Track progress as you implement changes and continue improving your environmental impact over time.
Every Decarb calculation produces a structured report — not a score, not a grade. A data-driven breakdown you can act on.
Broken down by category: transport, energy, food, and goods.
Your result compared against national and global averages.
Ranked by impact. The actions that move the number most, first.
Every assumption and emission factor documented. Transparent by default.
Our calculations use emission factors from the IPCC, IEA, and national greenhouse gas inventories. We distinguish estimates from verified data, and we document every assumption we make.
We will not tell you you are carbon neutral. We will tell you where you stand — and what to do about it.
“Precision without transparency is not credibility. We show our work.”
Primary source for global warming potential values and emission factors.
Electricity grid emission factors by country and energy mix data.
Country-level emission factors for transport, food, and consumption.
Consumption-based emission factors for goods and services.
Decarb gives access to certified offset projects verified by UNFCCC CERs and Verra VCS standards. Offsetting complements reduction — it does not replace it.