Use a carbon footprint calculator to find your baseline

Use a free online calculator like the EPA Carbon Footprint Calculator, CoolClimate Calculator (UC Berkeley), or Carbon Footprint Ltd to estimate your household's annual emissions. Input your energy bills, driving habits, diet, and shopping patterns. The result shows which categories contribute most.

Why It Works

You cannot reduce what you do not measure. Most people are surprised by their results — home heating, driving, and food typically dominate, not the things people stress about (straws, bags). Knowing your breakdown lets you focus on high-impact changes.

Tips

• Gather 12 months of electricity, gas, and fuel bills before starting for accuracy
• The EPA calculator is the simplest; CoolClimate is the most comprehensive
• Recalculate annually to track progress
• The average American's footprint is ~16 tons CO2/year; the global average is ~4.5 tons