Business Carbon Footprint Calculator
Estimate your annual business carbon footprint and what offsetting it costs.
Measure first, then reduce
GreenScore turns a rough estimate like this into an auditable emissions inventory and a reduction plan.
Try GreenScore free →How this calculator works
This calculator converts three of the biggest business emission sources — electricity, fuel and air travel — into a single annual carbon footprint in tonnes of CO2e using standard emission factors.
It then multiplies your footprint by an offset price so you can see the cost of going carbon-neutral, and breaks out electricity separately since that is usually the fastest area to cut.
It is a screening estimate to prioritize where to measure properly, not an audited inventory — but it is enough to start a serious reduction plan.
Frequently asked questions
What emission factors are used?
Roughly 0.417 kg CO2e per kWh of grid electricity, ~10.2 kg per gallon of fuel, and ~0.18 kg per air-travel mile. These are widely-used averages; a full inventory would refine them to your region and fuel mix.
Is offsetting enough?
Offsets handle residual emissions, but reduction comes first. GreenScore helps you measure Scope 1–3 emissions and track reductions toward science-based targets.
Is this calculator free to use?
Yes. It runs entirely in your browser, needs no signup or email, and nothing you enter is stored or sent anywhere.