Flight Carbon Calculator
Departure Airport:
Destination Airport:
Flight Class:
Round Trip:
Number of Passengers:
Estimated Distance: 0 km
Carbon Emissions: 0 kg CO2
Emissions Comparison
Equivalent to driving: 0 km
Trees needed to offset (per year): 0

Flight Carbon Calculator Formula

Here’s the formula used by the flight carbon calculator in bullet points:

  • Basic Distance Calculation:
    • Uses Haversine formula to calculate distance between two airports based on their latitude and longitude
    • If airports aren’t in the database, generates a random distance between 1,000-6,000 km
  • Emissions Calculation Factors:
    • Economy Class: 0.1 kg CO2 per passenger per km
    • Premium Economy: 0.16 kg CO2 per passenger per km
    • Business Class: 0.25 kg CO2 per passenger per km
    • First Class: 0.4 kg CO2 per passenger per km
  • Total Emissions Formula:
    • Total Emissions = Distance × Emissions Factor × Number of Passengers
    • For round trips, distance is doubled
  • Comparison Calculations:
    • Driving Equivalent (km) = Total Emissions ÷ 0.12
    • Trees Needed for Offset = Total Emissions ÷ 25 (rounded up)
  • Haversine Distance Formula Details:
    • Earth’s radius used: 6,371 km
    • Converts latitude/longitude from degrees to radians
    • Calculates great-circle distance between points on a sphere