Environment & Sustainability
Carbon Footprint Calculator
Enter common activity amounts to estimate a simple monthly carbon footprint in kilograms and tonnes of CO2e.
Inputs
Results
Useful next checks
- Check the inputs before relying on the result.
- Try a second scenario to compare outcomes.
- Read the guide below for context.
# Carbon Footprint Calculator
Use this carbon footprint calculator to estimate monthly CO2e emissions from car travel, electricity, flights, and household gas.
What this calculator does
Enter common monthly activity amounts and the calculator estimates kilograms of CO2e for each activity plus a total monthly and annual estimate.
How it works
This v1 calculator uses broad planning factors: car travel at 0.17 kg CO2e per km, electricity at 0.20 kg CO2e per kWh, flights at 0.15 kg CO2e per km, and gas at 0.18 kg CO2e per kWh.
Example calculation
For 500 km of car travel, 250 kWh of electricity, no flights, and 600 kWh of gas, the estimate is 243 kg CO2e per month, or about 2.92 tonnes per year.
How to use the result
Use the result to compare scenarios and identify the biggest input in your estimate. For formal reporting, use official emissions factors for your country, energy mix, fuel type, and reporting period.
Assumptions and limitations
The factors are simplified and not official. Real emissions vary by vehicle, fuel, grid intensity, aircraft, occupancy, supplier, season, and methodology.
FAQs
What is CO2e?
CO2e means carbon dioxide equivalent. It combines greenhouse gases into a common unit based on warming impact.
Can I use this for business reporting?
No. Treat it as a quick personal planning estimate, not a compliance or corporate carbon accounting tool.
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Frequently asked questions
Are these official emissions factors?
No. This v1 calculator uses broad planning factors for quick estimates, not official reporting.
What does CO2e mean?
CO2e means carbon dioxide equivalent, a way to compare different greenhouse gases with one unit.