Rough Annual Carbon Estimate

Enter your annual energy use, fuel, fleet mileage and flights to get a rough carbon footprint in tonnes of CO2 equivalent. Uses UK 2024 government conversion factors, which you can edit if you have your own.

Buildings and energy
On-site and fleet fuel
staff cars where you do not capture the actual fuel
Business travel by air

Default values are UK 2024 conversion factors in kg CO2e per unit. Replace any with your own figure if you have it.

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tonnes CO2e per year

What this covers and what it does not. This is a rough estimate of common direct and energy-related emissions (broadly GHG Protocol Scope 1, Scope 2 and a slice of Scope 3 business travel). It does not cover purchased goods and services, waste, water, employee commuting or your wider supply chain, which often dominate a full footprint. Electricity uses the location-based grid average; a market-based figure with a green tariff may differ. Use it to spot your biggest sources, not as a reportable total. Conversion factors are the UK 2024 set (kg CO2e per unit) and are editable above.