Calculate emissions and contribute to climate protection

Calculate and offset your flight emissions directly from your logbook

The digital flight log from now offers the option of calculating the CO2 footprint of flights. Aircraft of the TMG, SEP and MEP classes with conventional combustion engines are supported.

By directly selecting the flights already recorded in the flight log, performs the calculation with just a few clicks. Based on these calculations, an effective contribution to climate protection can now be made.

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Anyone who submits at least one flight from to by 31 August 2024 and makes a climate protection contribution based on this will automatically be entered into a prize draw to win a Bose A30 headset.

How to win: Read the conditions of participation, submit a flight from your account to, calculate the emissions and offset them with SAF or climate projects.

Step-by-step tutorial

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Choose Sustainable Aviation Fuels (SAF) or effective climate protection projects

Based on the calculated CO2 emissions, currently offers two options for making an effective and transparent contribution to climate protection. These can be investments in sustainable carbon offset projects from myclimate or in Sustainable Aviation Fuels (SAF).

Download fact-sheet

This is how the contribution works using SAF

If SAF is selected, pools this contribution together with others and triggers orders from SAF partners at regular intervals. Once SAF has been fed into the aviation system, receives confirmation of the quantity refuelled and the resulting reduction in CO2 emissions.

The principle known as "book & claim" is similar in function to that of green electricity, where consumers pay their electricity provider a surcharge for electricity from sustainable sources. In the case of green electricity, the electricity produced is fed into the grid and the purchaser is rarely the recipient. The situation is similar with, where users only pay the surcharge for SAF.

As with electricity, it makes the most sense from a life cycle assessment perspective if SAF arrives at an aircraft without complex supply chains. In contrast to electricity, confirms delivery to the customer.

How the contribution via climate protection projects works

The emissions calculated from the flight data serve as the basis for making a voluntary but effective contribution to high-quality climate protection projects that demonstrably reduce CO2 emissions.

All climate protection projects are implemented by competent partners and verified by independent experts. myclimate applies only the strictest, independent quality standards (CDM, Gold Standard and Plan Vivo) when selecting and developing climate protection projects.

Climate protection made easy

You need an account at so that you can make a contribution to climate protection for your flights quickly and easily directly from your personal flight logbook. If you don't have one yet, you can register and test it free of charge for 30 days.

As soon as you have your digital logbook, you can follow this tutorial:

Who are the partners of this initiative?

This service is offered by in collaboration with, with the support of the Aero Club of Switzerland (AeCS) and the climate protection organization myclimate.

The support of the Zurich University of Applied Sciences (ZHAW) and the cooperation with the Federal Office of Civil Aviation (FOCA) underline the scientific basis and sustainability of this solution.

Frequently Asked Questions

For which aircraft and airplanes does the calculation work?

What data is exchanged between and

Can I select and offset several flights at once?

How and why does first calculate fuel consumption?

How accurate is the calculated fuel consumption on

How does calculate CO2 emissions?

What are Well-to-Wake CO2 emissions?

What are Infrastructure and Non-CO2 emissions?

What to do about my CO2 emissions?

What is Sustainable Aviation Fuel?

How can Well-to-Wake CO2 emissions be reduced through Sustainable Aviation Fuel?

Why can I offset my Well-to-Wake CO2 emissions with 100% Sustainable Aviation Fuel when current blending limits of SAF are 50%?

What happens after Sustainable Aviation Fuel is booked through

What are Climate Protection Initiatives?

Can I choose whether I want to offset via SAF or Climate Protection Initiatives?

Can the same flight be offset twice?

After offsetting, which CO2 emissions are displayed in

Why do I need a account?