Please enter your annual car travel information.

Car Fuel Miles Driven Avg. MPG Tonnes CO2
1 Gas Diesel 0.00
2 Gas Diesel 0.00
Total Car Travel Tonnes: 0.00

Enter your annual air travel roundtrips.

Tonnes CO2

1,000 miles & 2 hours roundtrip

Example: Charlotte to New York


2,000 miles & 4 hours roundtrip

Example: Chicago to Denver


5,500 miles & 9 hours roundtrip

Example: Los Angeles to New York


10,000+ miles & 15+ hours roundtrip

Examples: Seattle to Istanbul

New York to Beijing

Total air travel tonnes: 0.00

Choose from 2 options below to calculate your annual home energy footprint.

Use Averages

Quick method. Uses state averages for annual electricity consumption, pounds of CO2 per kWh, and natural gas. Uses national household averages for fuel oil and propane.

State Heating Type Tonnes CO2


Enter your actual annual electricity and heating fuel usage.

Requires your utility bills. Most accurate. Includes state energy mix from above.

State Tonnes CO2
Electricity (kWhrs)
Natural Gas (Therms)
Heating Oil (Gallons)
Propane (Gallons)

Annual Total

Car Travel I want to enter my own value.
Air Travel I want to enter my own value.
Home I want to enter my own value.
Total I want to enter my own value.

Your total annual tonnes:

What do I do now?

Round this amount up or down and enter into the quantity field beside the Donate button.