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WWF Carbon Footprint Calculator

This simple calculator calculates your families footprint by asking you 4-8 questions in four categories; food, travel, home, and stuff.  After answering the multiple choice questions the calculator then presents you with your carbon footprint in planets.  The idea being that if everyone on earth lived like you, this is how many earth-like plants we’d need to sustain us.

The forums and hints & tips pages give useful information of how you can reduce your footprint

Act on CO2 Carbon Footprint Calculator

This is the official Carbon Footprint Calculator from the UK Governments ‘Act on CO2‘ campaign. The calculator is split in to several categories -Individual or Household Heating & Lighting,

The first set of questions allows you to calculate the footprint of an individual or a UK Household.  It focuses on your CO2 contribution for your heating and lighting.  The results pages tells you how much CO2 (in tonnes) you contribute.

The second set of questions calculates the CO2 contribution of your electrical items and tells you approximately how much CO2 is emitted (tonnes per year).

The third, and final,  set of questions asks about your travel regime.  At the end it gives you your total CO2 contribution as well as a useful CO2 planner to help reduce your impact on the environment.

Google UK Carbon Footprint Project

Use the Google Carbon Footprint calculator to measure your carbon footprint and find out what practical steps you can take to make it smaller. On a personalised page, you can track your progress, update your carbon-reducing actions and see a Google Map featuring the footprints and actions of everyone taking part. To share ideas, ask advice or find people in your local area to collaborate with, join the UK Carbon Footprint discussion group.

Carbonica Carbon Footprint Calculator

Carbonica’s Carbon Footprint Calculator provides several calculators for both individual and business calculations.

The great thing about Carbonica is that they not only give you great information about how to reduce your carbon footprint but you can buy trees to offset your carbon footprint.  Offsetting one tonne of CO2 costs just £2.99, and for that one tree is planted in the rainforest which is about 10% of your annual carbon footprint.  You can even purchase 1 tonne offset packs which is great for households or businesses with larger footprints.  They offer a 25% discount when you buy 10 packs.

The Nature Conservancy Carbon Footprint Calculator

Use The Nature Conservancy’s carbon footprint calculator to measure your impact on our climate. Their carbon footprint calculator estimates how many tons of carbon dioxide and other greenhouse gases your choices create each year.

The calculator walks you through a set of simple questions in subjects  such as home energy, driving & flying, food & diet, and recycling & diet.  At the calculator provides you with some pie charts showing and comparing your carbon footprint against the U.S. average.

Like many of the tools listed here they also provide some useful hints, tips, and ways to reduce your footprint.

www.carbonfootprint.com Calculator

www.carbonfootprint.com provides calculators for both home and businesses.  After entering details about the home/business, travel, food, and recycling it provides your CO2 footprint in tonnes per year.  The results page compares you against the rest of your country and against the rest of the world so you can see how good, or bad, you fair.

Other areas of the site offer helpful suggestions for reducing or offsetting your carbon footprint.