Carbon Footprint Calculator

Carbon Calculators

Understand Your Impact. Start Your Journey to Net Zero

Calculating your carbon footprint is the essential first step to taking meaningful climate action. As the UK's original and most trusted provider, our online calculators are backed by over 20 years of expertise to give you an accurate, reliable measure of your impact.

Whether you are an individual, a small business, or a large corporation, the path to a sustainable future begins with a clear understanding of where you are today. Select the right calculator for you to get started.

Try our new "state of the art" Sustrax carbon calculators

Individuals / Households Free, online carbon footprint calculator Sustrax Vita

Small Companies Free for micro business Sustrax Lite, Lite X, and Lite XL

Larger Corporates Software Tracking Platforms Sustrax MX

Your Result is In. What's the Next Step?

A number is just the beginning. The next, most important step is to create a plan to take credible climate action. Your journey involves two key stages: reducing what you can, and offsetting what you can't.

1. Create a Reduction Plan

The most impactful climate action is to reduce your emissions at the source. Learn about the most effective strategies for your home or business, from energy efficiency to sustainable procurement.

Explore Reduction Strategies

2. Offset with Confidence

For the emissions you can't yet eliminate, take full responsibility by supporting high-impact, verified climate projects around the world. Our transparent approach ensures your action is credible and makes a real difference.

Offset Your Emissions Now

Prefer to use the old classic calculator? We've kept it for you below.

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Creating a free user account is quick and simple, and allows you to:

• Save your data so you can revisit and update your calculation when you like
• Enter more cars and flights
• Enter information about other items you may own
• Save and compare multiple sets of results allowing you to track your progress from one year to the next

Try Our New & Improved Carbon Calculator! It's free to use and better than ever. Calculate your emissions here - Sustrax Vita