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Travel Emissions Calculator

CO₂ from a journey by car, train, bus, ferry or plane, per person.

Enter values

Results update as you type.

Result

CO₂ for the journey

171 kg

Per passenger
171 kg
Total distance
1,000 km
Emission factor
171 g/km
Trees to offset
8.14
Equivalent by train
41 kg

About the Travel Emissions Calculator

CO₂ from a journey by car, train, bus, ferry or plane, per person.

Also known as: flight emissions calculator, journey co2, transport carbon calculator, travel carbon footprint.

How to use this calculator

  1. Enter transport, distance, passengers sharing, journey.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Review the breakdown shown under the main result.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

kg CO₂ = distance × emission factor ÷ passengers

Worked example

Using the values pre-filled in the calculator above:

  • Transport: Car, petrol (171 g/km)
  • Distance = 500 km
  • Passengers sharing = 1
  • Journey: Return

the calculator returns:

  • CO₂ for the journey: 171 kg
  • Per passenger: 171 kg
  • Total distance: 1,000 km
  • Emission factor: 171 g/km