Calculadora de Sustentabilidade Olímpica
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
CO₂e = atletas × (voo_km × 0,195 × 1,9 + noites × 20,6 kg)
About this calculator
The Olympic Sustainability Calculator estimates the carbon footprint of athletes in major sporting events, such as the Olympic Games or world championships. It considers two main factors: flight emissions (with a multiplier of 1.9 to include non-CO₂ effects) and nightly accommodation emissions (20.6 kg CO₂e per night). The result is given in kilograms of CO₂ equivalent (CO₂e) for the total number of athletes entered.
How it works: the formula CO₂e = athletes × (flight_km × 0.195 × 1.9 + nights × 20.6) calculates total emissions. The term 'flight_km × 0.195 × 1.9' represents flight emissions per athlete (0.195 kg CO₂e/km for long-haul flights, multiplied by 1.9 to include altitude effects). 'nights × 20.6' adds accommodation emissions per athlete. The final result is multiplied by the total number of athletes.
When to use: ideal for event organizers, sports federations, sponsors, and researchers who want to quantify the environmental impact of athlete travel and accommodation. Also useful for comparing different scenarios (e.g., reducing athlete numbers, choosing closer destinations, or shortening stay duration).
Cautions: the calculator does not include emissions from stadium construction, local transport, food, or waste. The flight factor (0.195 kg/km) is for international flights; for domestic or regional flights, the value may differ. The 1.9 factor is an approximation; organizers may use more precise factors (e.g., 1.0 for CO₂ only). Accommodation considers an average hotel; more efficient hotels may have lower emissions.
Frequently asked questions
What does CO₂e mean?
CO₂e stands for carbon dioxide equivalent, a measure that converts all greenhouse gases into a common unit based on global warming potential.
Why is the flight factor multiplied by 1.9?
This factor includes non-CO₂ effects of emissions at altitude, such as nitrogen oxides and water vapor, which amplify the climate impact of flights.
Can this calculator be used for small events?
Yes, but the flight and accommodation values are based on averages for large events. For smaller events, adjustments may be needed, especially if flights are domestic.
How can I reduce the calculated carbon footprint?
Reduce the number of athletes, choose closer destinations (fewer flight km), or shorten the stay. Also consider direct flights and hotels with environmental certification.