Travel emissions and tree contribution calculator

For each journey segment, the calculator multiplies the distance by the selected transport factor and adds the estimated emissions for any hotel nights. The breakdown shows the factors and calculations used for your itinerary.

The suggested number of trees is the estimated trip emissions multiplied by your contribution percentage, divided by the planning assumption per tree, and rounded up. The default assumption is 100 kg CO₂ per tree over its lifetime. You can see the current value next to your result.