Public transport
CO2 = Distance × Emission factor
Distance is entered in kilometers. Emission factors are expressed either as g/km or g/passenger-km depending on transport mode.
METHODOLOGY
This calculator estimates transport emissions with
transparent formulas and fixed emission factors.
The result is an approximation designed to compare transport choices.
Switch between individual and business methodology to view the relevant formulas and emission factors.
CO2 = Distance × Emission factor
Distance is entered in kilometers. Emission factors are expressed either as g/km or g/passenger-km depending on transport mode.
CO2 = Distance × Emission factor Passengers
For private modes, emissions are allocated per passenger.
| Transport mode | Emission factor |
|---|---|
| Car (petrol) | 162 g/km |
| Car (diesel) | 158 g/km |
| Car (electric) | 37 g/km |
| Motorcycle (petrol) | 111 g/km |
| Motorcycle (electric) | 23 g/km |
| Transport mode | Emission factor |
|---|---|
| Bybane | 4 g/passenger-km |
| Bus (diesel) | 102 g/passenger-km |
| Bus (electric) | 21 g/passenger-km |
| Train (diesel) | 91 g/passenger-km |
| Train (electric) | 7 g/passenger-km |
| Airplane (economy) | 80–100 g/passenger-km |
| Airplane (business) | 200–400 g/passenger-km |
| Airplane size (small) | 120–180 g/passenger-km |
| Airplane size (medium) | 80–110 g/passenger-km |
| Airplane size (large) | 70–100 g/passenger-km |
| Ferry (diesel) | 180–220 g/passenger-km |
| Ferry (LNG natural gas) | 150–165 g/passenger-km |
| Transport mode | Emission factor |
|---|---|
| Walking | 0 g/km |
| Bicycle (traditional) | 5–12 g/km |
| Bicycle (electric) | 13–22 g/km |
CO2 = Distance × Emission factor
Used for business transport modes measured in g/km, such as vans.
CO2 = Distance × Weight × Emission factor
Used for freight modes measured in g/tonne-km, such as trucks, rail freight, cargo planes, maritime transport, and pipelines.
| Transport mode | Emission factor |
|---|---|
| Van (diesel) | 245 g/km |
| Van (biodiesel B100) | 104 g/km |
| Van (electric) | 48 g/km |
| Van (hydrogen) | 28 g/km |
| Truck (diesel) | 75 g/tkm |
| Truck (biodiesel B100) | 32 g/tkm |
| Truck (electric) | 18 g/tkm |
| Truck (hydrogen fuel cell) | 14 g/tkm |
| Rail Freight (diesel) | 28 g/tkm |
| Rail Freight (electric) | 6 g/tkm |
| Pipeline (gas powered) | 15–25 g/tkm |
| Pipeline (electric) | 7–10 g/tkm |
| Transport mode | Emission factor |
|---|---|
| Maritime (diesel) | 10–15 g/tkm |
| Maritime (LNG) | 10 g/tkm |
| Maritime (biofuel) | 3–8 g/tkm |
| Transport mode | Emission factor |
|---|---|
| Dedicated cargo plane (jet fuel) | 602 g/tkm |
| Belly cargo (passenger plane, jet fuel) | 410 g/tkm |
| Dedicated cargo plane (SAF) | 102 g/tkm |