Carbon Footprint Calculator
Calculate your carbon footprint quickly and easily with our comprehensive and user-friendly calculator.
Carbon Inputs
Enter your weekly transportation miles and monthly utility usage. All values must be zero or positive.
Use EPA emission factors, which our engine applies automatically to annualize each input.
Values represent the annualized greenhouse gas output in metric kilograms of CO2 equivalent.
How to Use This Calculator
Record your weekly miles driven and monthly electricity and gas usage. Click Calculate to refresh the annual totals. Inputs accept decimals, and results round to two decimal places.
Methodology
Data Source
All calculations rely on emission factors published by the Environmental Protection Agency (EPA) and mirror the guidance found on the EPA carbon footprint calculator.
Formula Breakdown
Transportation: total = miles/week × 52 × 0.411 kg CO2
Electricity: total = kWh/month × 12 × 0.233 kg CO2
Natural Gas: total = therms/month × 12 × 5.3 kg CO2
Total Footprint: sum of each mode’s annual output.
Glossary
- Transportation: Weekly miles driven across all personal vehicles.
- Electricity: Kilowatt-hours consumed per month from your utility bill.
- Natural Gas: Therms of natural gas used for heating, cooking, or water heating.
FAQ
What is a carbon footprint?
A carbon footprint quantifies the greenhouse gases generated by personal or household actions, expressed in kilograms of CO2 equivalent per year.
How can I reduce my carbon footprint?
Reduce miles driven, improve home efficiency, switch to cleaner energy, and recycle more to shrink your annual footprint.