Calculadora de Pegada de Carbono do Voo
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
CO₂e = distância × fator_emissão × RFI(1,9) × multiplicador_classe
About this calculator
This calculator estimates the carbon dioxide equivalent (CO₂e) emissions generated by a commercial flight. The calculation considers the distance traveled, seat class (economy, business, or first class), and a radiative forcing index (RFI) of 1.9, which accounts for the additional impact of greenhouse gases emitted at high altitudes.
The formula used is: CO₂e = distance (km) × emission factor (kg CO₂/km) × RFI (1.9) × class multiplier. The default emission factor is 0.115 kg CO₂/km for an average flight. The class multiplier is 1 for economy, 1.5 for business, and 2.5 for first class, reflecting greater space and weight per passenger.
Use this calculator to estimate the environmental impact of your air travel, whether for personal planning, sustainability reports, or carbon offsetting. Keep in mind that the result is an estimate and does not replace more precise calculations based on specific aircraft and route data.
Cautions: the emission factor and RFI are average values; longer flights may have different efficiency. Additionally, the calculator does not consider layovers or connections, which can increase total emissions. For a more accurate footprint, consider aircraft type and load factor.
Frequently asked questions
What does RFI mean and why is it 1.9?
RFI stands for Radiative Forcing Index, which measures the additional impact of emissions at altitude. The value 1.9 is the factor recommended by IPCC for flights, multiplying CO₂ emissions to include other effects like nitrogen oxides and water vapor.
How does seat class affect emissions?
Higher classes (business and first) occupy more space and weight per passenger, resulting in higher fuel consumption per person. The class multiplier adjusts emissions accordingly: 1.5 for business and 2.5 for first class.
Does this calculator consider layovers or connections?
No. Each flight segment should be calculated separately. For a trip with layovers, add the results of each segment.
How accurate are the results?
Results are estimates based on averages. Accuracy depends on factors like aircraft type, load factor, and flight conditions. For more precise values, consult airline-specific data.
Can I use this calculation for carbon offsetting?
Yes, but check with offset programs if they accept estimates based on distance and class. Many require more detailed calculations or use their own methodologies.