About | Carbon Footprint Calculator

About This Calculator

What This Tool Does

This Carbon Footprint Calculator provides a simple way to convert between energy consumption and estimated CO₂ emissions. You can use it to:

  • Convert electricity usage (kWh) to carbon dioxide equivalent (CO₂e) emissions
  • Estimate emissions from various energy sources like natural gas and transportation fuels
  • Calculate the carbon impact of daily activities
  • Take a quiz to assess your overall energy consumption habits

The calculator is designed to be a starting point for understanding the relationship between energy use and environmental impact.

Data Sources

This calculator uses conversion factors primarily from the U.S. Environmental Protection Agency's (EPA) Greenhouse Gas Equivalencies Calculator. The main conversion factor for electricity (0.000637 metric tons CO₂e per kWh) is based on the EPA's eGRID 2022 data, using the U.S. national weighted average CO₂ marginal emission rate.

The equivalencies shown (such as tree seedlings grown or miles driven) are simplified illustrations based on EPA estimates to help visualize the abstract concept of carbon emissions.

How to Use the Calculator

Our calculator offers several tools to help you understand your carbon footprint:

Electricity Calculator

Convert kilowatt-hours (kWh) to CO₂e emissions and see environmental equivalencies.

Energy Sources

Calculate emissions from natural gas, transportation fuels, and home energy use.

Daily Activities

Estimate the carbon impact of everyday activities like driving, eating, and using electronics.

Energy Quiz

Answer questions about your lifestyle to get a personalized assessment of your energy consumption.

Limitations

It's important to note that this calculator provides estimates based on national averages and generalized conversion factors. Actual emissions can vary based on:

  • Regional differences in electricity generation
  • Specific energy sources used in your area
  • Variations in personal usage patterns
  • Different vehicle types and efficiencies

For more detailed and personalized carbon footprint analysis, consider consulting with an environmental specialist or using region-specific tools.