Climatiq API
Carbon emissions calculation API for developers to embed sustainability data into any application or workflow.
What it does
Climatiq is an emissions calculation API enabling software developers to embed carbon footprint calculation into any application or workflow - without building and maintaining emissions factor databases themselves. The API takes activity data inputs (electricity in kWh, distance traveled in miles, spend in a category) and returns CO2 equivalent emissions calculated using curated, peer-reviewed emission factors from authoritative sources (IPCC, IEA, EPA). AI capabilities include intelligent emission factor selection matching activity inputs to the most appropriate factor by geography and time period, activity data normalization handling unit conversions, and automated factor freshness monitoring. Used by sustainability platforms, expense management tools, e-commerce platforms, and financial services companies.
Why AI-ENHANCED
Climatiq is an established emissions calculation API that has integrated intelligent emission factor matching, automated data normalization, and factor currency monitoring into a mature carbon calculation infrastructure product.
Best for
SaaS companies and startups use Climatiq API to add carbon footprint data to their products - embedding emissions calculation without building the underlying emission factor database.
Mid-market platforms integrating sustainability features use Climatiq for reliable emissions calculation - API handling factor selection and unit conversion so product teams focus on the user experience.
Enterprise software vendors and financial institutions use Climatiq API at scale - embedding emissions calculation into expense platforms, banking apps, and supply chain systems.
Limitations
Climatiq calculates emissions from the activity data it receives — inaccurate or incomplete activity data generates unreliable emissions estimates regardless of API quality.
When only spend data is available, Climatiq uses spend-based emission factors with high uncertainty ranges — results should be communicated with appropriate caveats.
Comprehensive Scope 3 accounting requires supply chain data collection and organizational boundary decisions that go beyond what an emissions factor API provides.
Alternatives by segment
| If you need… | Consider instead |
|---|---|
| Full carbon accounting platform | Sweep |
| Energy data for Scope 2 calculation | Arcadia |
| Independent emissions verification data | Climate Trace |
Free tier with 2,500 API calls/month. Starter at $199/month. Growth at $499/month. Enterprise pricing negotiated. Annual billing discount.
