This tool calculates the carbon emissions (CO₂e) of fuels and combustion using UK government greenhouse gas conversion factors (DENZ/DEFRA) to ensure consistency and credibility .It’s designed for awareness, planning, and can be used as part of a wider carbon audit or reporting process.
All emission factors are based on representative UK average conditions, reflecting typical fuel composition, combustion performance, and supply chain characteristics. Factors include upstream (well-to-tank, WTT) emissions where applicable, ensuring consistency with UK Government (DESNZ/DEFRA) methodology and alignment with the GHG Protocol and ISO 14064.
For more information click here
Offset Your Emissions
Company name.
Describe the operation.
Enter your total emissions from the calculator above to offset your footprint.
- (Round your result up to the nearest whole tonne (e.g. 2.4 = 3 tonnes)
- Project: Select your preferred carbon offset project
Next steps:
Enter your email and click Send Results to receive your provisional certificate.
- Complete payment to validate your certificate and finalise your offset.