Carbon Interface
FreemiumLiveLast verified 24 Sept 2026
Estimates CO2 emissions from electricity, flights, vehicles, shipping and fuel via REST.
Example request
curl -X POST 'https://www.carboninterface.com/api/v1/estimates' -H 'Authorization: Bearer $API_KEY' -H 'Content-Type: application/json' -d '{}'Free tier, in plain English
Free Hobby plan gives 200 requests a month with REST API access and a monitoring dashboard.
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