Carbon Footprint Calculator
The Carbon Footprint Calculator estimates your home's annual CO2e emissions from gas, electricity and oil, applies a solar offset if you have panels, compares the result against the UK average, and suggests reduction actions ranked by impact. Emission factors are sourced from BEIS / DESNZ official conversion factors.
Carbon Footprint Calculator
Estimate your home's annual carbon emissions and potential reductions.
See 20 real-world examples
Each link below runs this calculator with real UK city and property inputs and publishes the exact computed savings, payback time, install cost and CO2 figures.
- Your Birmingham Oil-Heated Home's Carbon Footprint
- Your Carbon Footprint 2.92 Tonnes per Year
- Your Carbon Footprint Electric-Heated Home in Belfast
- Your Carbon Footprint for a Gas-Heated Home in Southampton
- Your Edinburgh LPG Home's Carbon Footprint
- Your Electric Home's Carbon Footprint in Leeds
- Your Electric-Heated Home in Cardiff A Carbon Snapshot
- Your Gas-Heated Home's Carbon Footprint in London
- Your Glasgow Oil-Heated Home's Carbon Footprint
- Your Home's Carbon Footprint 2.92 Tonnes CO2e
- Your Liverpool Home's Carbon Footprint 2.92 Tonnes CO2e
- Your LPG Home's Carbon Footprint in Manchester
- Your LPG Home's Carbon Footprint in Newcastle
- Your LPG-Heated Home in Brighton Carbon Footprint Breakdown
- Your LPG-Heated Home's Carbon Footprint in Leicester
- Your Nottingham Home's Carbon Footprint
- Your Oil-Heated Home's Carbon Footprint 2.92 Tonnes
- Your Oil-Heated Home's Carbon Footprint in Bristol
- Your Plymouth Home's Carbon Footprint
- Your Sheffield Home's Carbon Footprint
How this calculator works
Emission factors are the official UK Government Greenhouse Gas Reporting figures: gas 0.183 kg CO2e/kWh, grid electricity 0.233 kg CO2e/kWh (2024 grid average), heating oil 2.54 kg CO2e/litre. Solar offset assumes generation displaces grid imports at the same emission factor. The "trees needed" figure converts at 22 kg CO2 sequestered per mature broadleaf tree per year (Forestry Commission guidance).
Sources & references
Frequently asked questions
Why does switching to a heat pump cut emissions?
A gas boiler emits 0.183 kg CO2 per kWh of useful heat. A heat pump uses 1 kWh of electricity to produce 3 kWh of heat (COP 3), so it emits 0.233 ÷ 3 = 0.078 kg CO2 per kWh of heat — about 57% lower today, dropping further as the grid decarbonises.
Should I include flights and food?
This calculator covers home energy only. UK average per-person emissions including transport, food, and consumption are around 8-10 tonnes per year. WWF Footprint Calculator covers the full picture.
Where do the emission factors come from?
They're the UK Government Greenhouse Gas Conversion Factors published annually by DESNZ (Department for Energy Security and Net Zero). The grid electricity figure updates yearly as the generation mix changes.
How accurate is "trees needed"?
It's a rough indicator. A mature UK broadleaf tree absorbs about 22 kg CO2 a year. Saplings absorb much less; very mature woodland more. The figure helps make abstract tonnes tangible — it's not a substitute for genuine carbon offsetting.
Is solar self-consumption double-counted?
No. We offset the total solar generation against grid emissions. In reality, only the self-consumed portion directly avoids grid imports — exported electricity displaces grid generation elsewhere, which is also a real emission saving.
Tool: Carbon Footprint Calculator. Last reviewed: . Figures based on Ofgem price cap, gov.uk grant guidance, and Energy Saving Trust advice. Verify scheme eligibility with your installer before commissioning work.