Personal Carbon Footprint Calculator
Estimate your annual CO₂ equivalent emissions across key life areas.
🚗 Transport
🏠 Home Energy
🍽️ Diet
🛍️ Shopping & Lifestyle
About this calculator
Estimate your yearly carbon footprint from driving, flights, home electricity, heating, diet and shopping. See the total in tonnes of CO₂ equivalent and which area is biggest.
The figures are estimates meant to show where your impact comes from.
How to use it
- Enter your weekly driving, flights and electricity.
- Choose your diet and shopping level.
- Read the total and the breakdown.
Where the numbers come from
Footprint = activity × emission factor. Typical factors: a petrol car ~0.17 to 0.21 kg CO₂ per km, grid electricity in India roughly 0.7 to 0.8 kg CO₂ per kWh, and a long-haul flight about 0.15 to 0.25 kg per passenger-km. Rough national averages per person per year: India about 2 tonnes, world about 4.7 tonnes, the US about 14 tonnes.
Worked example
200 km a week by car at 0.21 kg/km
| Annual distance | 200 × 52 = 10,400 km |
| Emissions | 10,400 × 0.21 = 2,184 kg = 2.18 tonnes |
Tips and common mistakes
- Flights and car use are usually the biggest levers.
- Shifting to renewable electricity cuts home emissions sharply.
- Eating less red meat helps more than local food miles.
- Buy fewer, longer-lasting products.
- Public transport and EVs reduce transport emissions.
Frequently asked questions
What is a carbon footprint?
Your total greenhouse gas emissions, in tonnes of CO₂ equivalent.
What is the average footprint?
About 2 t in India and 4.7 t worldwide.
What are CO₂e?
CO₂ equivalents combine different gases into one unit.
What reduces my footprint most?
Less flying, driving and meat; efficient homes.
Is this precise?
No, it is an estimate.
Is it free?
Yes.