Tom Hallam • October 27, 2025
Hello World! My name is Tom Hallam, and I'm the founder of CarbonTrail and CarbonAPI.
Today I'm writing to announce the official launch of CarbonAPI, almost a year in the making. You can now use CarbonAPI to calculate the emissions of expenses in over 40 countries, documents in a growing list, and soon freight, flight and cloud emissions – all through a simple API or in tools like Excel, OneDrive, Google Sheets, Dynamics Business Central, Xero, and more.
We have emission factor coverage in many countries through our partnerships with thinkstep-anz, Footprintlab, and others: United States, United Kingdom, Australia, New Zealand, various European countries, China, Taiwan, India, and more.
Explore our full global coverage here.
This is exciting because you now can our AI pipelines to calcualate global emissions in your own products, services, or in your existing workflows. You don't need to export data to yet another system – this is carbon accounting where you already are!
We're going live with the following functionality:
Coming very soon:
Keen to give it a go? We've got a generous free tier so you can see how things work. Click here to sign up
If you have any questions, queries or comments, head to our contact page. I read all submissions and will respond to you personally!
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