Directory of Carbon Footprint Calculators

We’ve compiled an extensive collection of free-to-use carbon footprint calculators available online.

For Companies
For Individuals

Carbon Footprint Calculators for Companies

A collection of free-to-use carbon footprint calculators, primarily for measuring GHG emissions of companies and organisations.

Streamlined Energy & Carbon Reporting Calculator

For calculating Scope 1, Scope 2 and Scope 3 emissions, as required by UK company reporting standards.

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Company Carbon Footprint Estimator

10 short questions to get an estimate for your company's carbon footprint.

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Churches & Charities

Carbon footprint calculator for churches, synagogues and charities, covering energy, working from home, travel and more.

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Farming Activities

GHG calculator designed specifically for the farm level, focusing on emissions arising from agricultural production of crops and/or livestock (5 free assessments).

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GHG Protocol

A collection of tools and worksheets based on different industries enable companies to develop comprehensive and reliable inventories of their GHG emissions.

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GHG Conversion Factors

Although this isn’t a calculator, it is a very useful database of conversion factors for calculating Scope 1 and Scope 2 emissions.

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Carbon Footprint Calculator for SMEs & Home Working

Spreadsheet-based calculator for SMEs based in the UK, with sections for calculating the impact of home working.

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Carbon Footprint Calculator for US SMEs

Multi-step calculator for SMEs based in the United States, with regional benchmarks.

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SME Carbon Footprint Calculator

Carbon footprint calculator using GHG Protocol Guidance including direct emissions (Scope 1) and purchased electricity (Scope 2).

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Events & Conferences

Calculator for events and conferences covering delegates, travel, heating & lighting and more.

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Air Freight & Passengers

Calculators for air freight and passenger air travel.

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Carbon Footprint Calculators for Individuals

A collection of free-to-use carbon footprint calculators, primarily for measuring personal and individual GHG emissions.

Home Building & House Renovations

Estimate of carbon used to build your home or extension, building upon the methodology recommended by RICS for projects at RIBA stages A-C.

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Personal Carbon Footprint Calculator

Estimate of your carbon carbon footprint covering home, travel and lifestyle habits.

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Rail, Bus & Coach Travel

Estimates the carbon dioxide (CO2) emissions generated from an individual's train travel; or bus & coach travel.

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Personal Carbon Footprint Calculator

16 multiple choice questions in our carbon footprint calculator to estimate your carbon footprint

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Flights & Air Travel

Calculates the carbon footprint of flights and air travel for passengers.

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Personal Carbon Footprint Calculator

Calculator first published in 2007, with a commitment to update as new information becomes available.

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Personal Carbon Footprint Calculator

UK based environmental footprint calculator.

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Driving Cars & Vans

Estimate the amount of carbon dioxide (CO2) emissions produced by an individual's car travel.

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Frequently Asked Questions

  • It can be difficult to know how to start, but we believe that ‘perfect shouldn’t get in the way of good’. It’s better to create an estimate of your carbon footprint now, and start to reduce and offset your carbon footprint today, instead of waiting for tomorrow.

  • A certified carbon credit allows you to offset your carbon footprint. To become carbon neutral you can purchase a tonne of CO2e to offset every tonne of CO2e you produce.

  • There are lots of online tools and data sets to help you create an estimate of your carbon footprint. Head over to our calculation page to get started.

  • At the moment, we only certify with companies and organisations, but private individuals are welcome to buy Certified Carbon Credits too.

  • Yes. All companies that offset with Certified Carbon get a certificate, a digital badge and a place on our Certified Carbon Registry.

  • Carbon net zero: you have undertaken actions to ensure your carbon footprint is zero.

    Carbon neutral: you have fully offset your carbon footprint by purchasing carbon credits.

Buy Carbon Credits

Carbon footprints and carbon offsetting can be a confusing landscape to navigate.

Don’t worry.

If you have a question, or would like to contact us, please send an email and one of our environmental experts will get back to you on the same day.

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