Calculate & offset CO₂ emissions - via API

Join 500+ companies using KlimAPI to integrate sustainability into their everyday operations.

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klimapi.pendingByCalculation({
  pendingByCalculationRequest: {
    calculationOptions: [
      {
        "type": "freighting_goods",
        "departure": "Berlin, Germany",
        "destination": "Munich, Germany",
        "weight": 5,
        "weight_unit": "kilograms"
      }
    ],
  },
}).then((data) => {
  console.log(data);
});

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100% GHG compliant

Our system is fully compliant with the GHG protocol

The latest emission factors

We take care of up-to-date and accurate factors for calculating emissions

Blazingly fast API

We answer more than 95% of API requests in under 100ms

Reliable offsets

Only the best 5% of projects make it through our comprehensive due diligence process

Our API

Calculate emissions

Offset emissions

Build with our robust API infrastructure

We make calculating and offsetting easier than ever for you. So you can concentrate fully on your core business.

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Available languages

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Currencies

Get individual carbon offsets with just one API call

We issue an individual certificate for each offset, which can be branded. You can also host the certificates on your own domain. Optionally, you can also query all the details of the certificate via API and create your own certificate page.

View sample certificate

Industry-leading number of automated calculation options

Air travel

Car journey

Ferry

Hotel stay

Bus trip

Train journey

Fuel

Freight

Cloud Computing

Electricity

Nutrition

Water consumption

Textiles

Electronics

Real estate

Furniture & furnishings

Explore the Emissions database

Full transparency

Our offsetting projects

Worldwide distributed projects

Our project portfolio spans all continents and includes a variety of technologies and project types. This enables us to ensure that we have the right project for everyone.

Hand selected

Our in-house team of offsetting experts carefully selects projects and ensures that they meet the highest standards. In addition, all projects are certified by independent third parties.

Technology first

To ensure the greatest possible impact, we use the latest technologies to combat climate change in our projects. We enable solar parks, wind farms, biogas plants and much more.

Learn more about our portfolio

Our standards and certifications

Resources to get you started

Find your tutorial

Use our wizard to quickly and easily find the right entry point for you.

CodeNo-Code

API

Our API offers you all the extensive options for calculation and compensation.

Code

Emissions database

Discover our constantly growing database for calculating individual CO2 emissions