Climate Calculator How big is your climate impact?

  1. 1 Calculate
  2. 2 Commit
  3. 3 Contribute

Calculate your footprint

For individuals · housing, travel and consumption

Free · 5 min · 2.4M have taken the test

Calculating for a company? Go to the business calculator

How it works

  1. 1

    Calculate

    Answer questions about housing, travel and consumption. Takes about 5 minutes.

    Answer questions about housing, travel and consumption. About 5 min.

  2. 2

    Commit

    Get personal tips that cut your footprint.

  3. 3

    Contribute Optional

    Support climate projects for what you can't reduce. From $9.

Safe drinking water project in Uganda

Example climate project

Clean water · Uganda

New wells reduce the need to boil water, which protects the forest and cuts emissions.

Free · 5 min · 2.4M have taken the test

Climate footprint: how your habits affect the climate

Your climate footprint, more often called your carbon footprint, measures the impact your everyday habits have on the climate. According to the IPCC, limiting warming to 1.5 °C needs rapid and deep cuts in global greenhouse gas emissions this decade. Every reduction counts, and the first step is knowing where your own emissions come from.

Climate calculator: test your climate impact in 5 minutes

With the ClimateHero climate calculator you answer questions about how you live, travel and consume. Based on your answers, it estimates all your greenhouse gas emissions and your climate footprint in tonnes of CO₂e, and shows what you already do well and which changes would make the biggest difference. The calculator works for the UK, Ireland, Australia, New Zealand, Canada, the US, the Philippines, India and many other countries.

If you'd like to look beyond the climate, try our environmental impact calculator.

What you can do for the climate, inside and beyond your footprint

Cutting your own carbon footprint is a great place to start: fewer flights you could avoid, more trips on foot, by bike or by public transport, renewable energy at home and less beef on your plate.

Your impact doesn't stop there, though. Talking about it with family and friends, suggesting changes at work or school, and backing climate initiatives where you live all multiply what you do on your own.

Want to go further? With a monthly subscription, you fund Gold Standard certified climate projects that cut emissions equal to twice what you can't avoid yet. On the results page you can include everyone in your household.

Climate calculator: frequently asked questions

How does the climate impact test work?

The test adds up the greenhouse gases your habits cause in a year, from the energy in your home to your travel, food and shopping, and expresses them in one unit: tonnes of CO₂ equivalent (CO₂e). That makes very different activities comparable. Want the details? Read how we calculate your footprint in our FAQ.

What's the difference between climate impact and environmental impact?

Climate impact covers greenhouse gases only. Environmental impact is broader: it also includes water and land use, pollution and biodiversity loss. The climate is a big part of your environmental impact, but not all of it. ClimateHero's environmental impact calculator explains the difference in more detail.

Is the calculator free, and how long does it take?

Yes, it's free to use, and the test takes about 5 minutes. You see your result as soon as you finish.

What do "net zero" and "carbon neutral" mean?

According to the IPCC, net zero greenhouse gas emissions is when human-caused greenhouse gas emissions are balanced by human-caused removals from the atmosphere over a set period. "Carbon neutral" is used in a similar way. These are goals for countries and for the planet as a whole, and under EU rules a product can no longer be called climate neutral because of carbon credits. ClimateHero's role is to help you cut your own emissions and fund certified climate projects, rather than labelling anyone carbon neutral.