Carbon dioxide emissions calculator

This carbon dioxide emission calculator will help you gain an approximate idea of how many tons of carbon dioxide some your activities generate and how many trees it would take to offset those emissions - free to use! 

Calculator usage instructions

• Enter the appropriate figures into the quantity column - all fields are optional. If you usually work in metric, there's also a handy conversion feature below.
• The number of tons of CO2 emissions will be displayed in the right hand column.
• At the bottom of the form, the total estimated amount of carbon dioxide emissions will be displayed as an annual and monthly figure.
• Below the emissions figures will be the estimated number of trees needed to offset those emissions both annually and monthly.
• Explanatory notes are below the calculator as to how those figures were obtained.

Need to convert from metric? 
Click here for handy pop-up converter.

Quantity Total Tons of CO2 annually Small car (40 mpg fuel economy) miles per month    Average/medium car (21 mpg fuel economy) miles per month   SUV/4 wheel drive (15 mpg fuel economy) miles per month   Electricity usage kwh/month   Natural/propane gas  cubic feet/month Fuel oil heating  gallons per month   Air Travel  miles per month   Train Travel  miles per month   General waste - how many people in your household? no. of people   How many people in your household have meat in their diet? no. of people   Total annual emissions tons Total monthly emissions tons No. of trees to offset per year trees No. of trees to offset per month trees