How it works

How we calculate the CO2emissions of flights

Distance
First, the shortest distance between the departure and destination airport is determined based on longitude and latitude ("great circle distance").
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Distance
Detour factor
The great circle distance is then multiplied by a detour factor to take holding patterns, weather conditions, etc. into account.
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Detour factor
Fuel consumption
For fuel consumption, we use a weighted average of the consumption of 3 aircraft types for short distances (<1,850 km) and 4 aircraft types for long distances.<1.850 km) bzw. 4 Flugzeugtypen bei Langstrecken ausgegangen.
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Fuel consumption
CO2 Emissions
The calculated fuel consumption is then multiplied by the emission factor of 3.15 (according to IPCCguidelines) to obtain the amount of total CO2 emitted. We apply this factor because the combustion of one kg of fuel produces 3.15 kg of CO2.
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CO2 Emissions
Emission output per passenger
To determine the CO2-emissions per passenger, the average number of seats on a short-haul or long-haul aircraft, the average load factor, and a certain factor for the flight class (economy, business, first) are used.
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Emission output per passenger
Climate impact
To take the actual climate impact of the greenhouse gases emitted into consideration, we use the Radiative Forcing Index. For this purpose, the greenhouse gas emissions are multiplied by a factor of 2.
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Climate impact

Die genaue Berechnungsmethode können Sie hier einsehen: Berechnungsgrundlage Flugrechner