Carbon Emission
Calculation Tools
for Travel

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Try out the Trip to Carbon API

const axios = require("axios"); axios.get('') .then(function (response) { console.log(; }) .catch(function (error) { console.log(error); });
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Carbon Calculator

An embeddable carbon calculator for your website.

Coming Soon
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Open Source

There are plans to make the core functionality
of trip to carbon open source soon.
Current Objective: developing API wrappers for different languages.
If this is something you may be interested in then join the discord :)

Join the Discord


The API uses two methods outlined by the IPCC, DEFRA U.K & GHG Protocol.

The free API has a rate limit of about 5 requests per minute. Authenticated requests using API keys have a higher limit of 20 requests/min. The self-hosted APIs will not have one set by Trip to Carbon.

The API is free to use at the current rate limits. Trip to Carbon will soon have a new open model that allows people to self-host the API and other tools (thus, you decide the limit). Sign up to the newsletter to be updated when this is launched!

The API can be used for a range of things. Examples: Calculating personal/business emissions or Integrating into travel sites

You can send an email here:

Trip to Carbon's API cannot be accessed from client side scripts. To get around this we suggest using a proxy server to make requests to the API from you client side script/application