# Climatiq API Reference Climatiq helps you calculate the environmental footprint created by a broad range of emission-generating activities. We simplify the process of converting your operational activity data into CO2e (carbon dioxide equivalent) estimates, allowing you to understand your impact on the environment and identify actions to manage and reduce it. Operational activity data can be generated from any actions that result in greenhouse gas emissions, including vehicle rides, energy consumption, flights, logistical operations, manufacturing, agriculture, heating or cooling of buildings, and countless other daily activities. Using the Climatiq REST API, you can take data from your software and systems and automatically transform that it into CO2e values, using emission factors from a range of validated sources available in the Open Emission Factor Database ([OEFDB](https://github.com/climatiq/Open-Emission-Factors-DB)). **Read more:** - [**Quickstart**](https://www.climatiq.io/docs/guides/quickstart) - Make your first CO2e estimate with the Climatiq API - [**How-To Guides**](https://www.climatiq.io/docs/guides) - Get help with everything from getting an API key to mapping activities onto emission factors - [**Data Explorer**](https://www.climatiq.io/explorer) - Find the right emission factors for your project

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