Calculadora de Carro vs Bicicleta
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
Carro: 0,21 kg CO₂e/km; Bicicleta: 0,005 kg CO₂e/km
About this calculator
This calculator compares the annual CO₂ equivalent (CO₂e) emissions between using a car and a bicycle for daily commutes. It considers an average distance traveled per day, multiplying by 365 days to obtain the annual total. Emissions are based on average factors: 0.21 kg CO₂e per km for car and 0.005 kg CO₂e per km for bicycle, accounting for bicycle production and maintenance. The result shows the difference in kg CO₂e per year.
How to use: enter the distance you travel on a typical day (in kilometers). The calculator will display the annual emissions for car and bicycle, as well as the emissions savings by choosing the bicycle. For example, if you travel 10 km per day, the car emits about 766.5 kg CO₂e/year, while the bicycle emits only 18.25 kg CO₂e/year. This tool is useful for environmental awareness and sustainable mobility planning.
When to use: when considering switching from car to bicycle to reduce your carbon footprint. Ideal for those seeking concrete data for more ecological transportation decisions. It can also be used in schools, companies, or sustainability campaigns to illustrate the impact of commuting choices.
Cautions: the emission factors are averages and may vary depending on car model, fuel, maintenance, and bicycle type. The calculator does not consider other factors such as time, financial cost, or health. Use as an estimate for relative comparison, not as an exact absolute value.
Frequently asked questions
Does the calculation consider the energy spent pedaling?
No. The calculator only considers CO₂e emissions associated with bicycle production and maintenance, not human caloric expenditure, which is carbon neutral.
Are these emission values for any type of car?
No. The values are general averages. Gasoline, diesel, electric, or hybrid cars have different factors. This calculator uses an average factor for combustion cars.
Can I use it to compare other modes of transport?
This calculator is specific to car and bicycle. For other modes, we recommend specialized tools.
Does a bicycle actually emit CO₂?
Yes, but in very small amounts. Emissions come from manufacturing, maintenance, and eventual disposal. Use itself emits no greenhouse gases.
What is the advantage of using a bicycle in terms of emissions?
A bicycle emits about 42 times less CO₂e per km than an average car. Over a year, savings can amount to hundreds of kilograms of CO₂e.