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This online calculator can be used to estimate most annual direct and indirect greenhouse gas emissions. It is suitable for organisations and individuals with a footprint of less than 200 tonnes. Please contact us for assistance in calculating emissions greater than this amount.

For our more comprehensive excel based carbon emissions calculator please email us at This e-mail address is being protected from spambots. You need JavaScript enabled to view it

Select one of the emissions sources below to begin:




This calculator is not designed to replace a formal greenhouse gas inventory, however if used correctly, the calculations should cover the activities from which most emissions are generated. For details of the sources used in this calculator please see the 'About Our Calculator' section.




Gathering Information

You will be required to gather information from sources like your electricity bill or vehicle log book.

If you have difficulty, averages are often available to make it easy!




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