Flights
Route distance, number of legs, cabin class and passengers. Longer routing and premium cabins generally allocate more fuel per passenger.
Travel Emissions Calculator
Calculate the CO₂ emissions from your flights, road trips, cruises and rail journeys. Offset instantly with verified carbon credits.
Our AI-powered calculator handles all travel modes — just describe your trip in plain language
Calculate My Travel EmissionsFree · No account required · Results in seconds
Typical Travel Emissions
What the trip calculator gives for the journey alone, for one traveller on a direct flight. Nights away and activities are added separately. Flights, car and train use DEFRA 2026 factors (flights include radiative forcing); the cruise figure is a Coffset estimate.
| Trip | CO₂e | Offset cost |
|---|---|---|
| London → New York, return, economy | 1,294 kg CO₂e | ~€52 |
| Short flight, 500 km each way, return, economy | 126 kg CO₂e | ~€5.04 |
| Car, 500 km one way (average petrol car) | 81 kg CO₂e | ~€3.24 |
| Cruise, 3,000 km | 750 kg CO₂e | ~€30 |
| Train, 500 km one way | 16 kg CO₂e | ~€0.64 |
Prices at €0.04/kg CO₂e. See methodology.
How It Works
- 1
Answer a few questions: how many people, how you travel, the route or distance, cabin class, nights away and where you stay. Pick an option or type it, e.g. "London to Barcelona".
- 2
The calculator works out the distance and applies DEFRA 2026 emission factors, with radiative forcing for flights. An AI only helps read answers you type.
- 3
Get your CO₂e figure and offset instantly with verified carbon credits
What the travel estimate includes
What is a travel emissions calculator?
A travel emissions calculator estimates the greenhouse gases associated with moving people between places. It converts details such as transport mode, distance, passenger count and cabin class into carbon-dioxide-equivalent (CO₂e). The result helps compare options before booking and identify the journeys that matter most.
What the travel estimate includes
The quality of an estimate depends on the trip information available. Coffset uses published conversion factors and asks for the inputs that most influence the result.
Road travel
Distance, at one average petrol car figure for the whole vehicle (DEFRA 2026). The car counts once however many people travel in it, so sharing lowers each person’s share.
Rail and public transport
Distance and number of passengers, at DEFRA 2026 average factors for national rail and for coaches. The calculator does not adjust for each country’s electricity mix.
Cruises
Distance and number of passengers, at one average figure per passenger-km. It is a Coffset estimate, not a DEFRA figure, and does not vary by ship or cabin.
How to improve accuracy
Type your real route (for example "London to Rome") rather than picking a distance band, include the return trip and any connections, and choose your cabin class. Keep booking records if you need a repeatable travel inventory.
Assumptions and limitations
Results are estimates, not audited travel inventories. Actual emissions vary with aircraft, load factor, route, weather, vehicle efficiency and energy mix. Aviation’s non-CO₂ effects are scientifically important but depend on methodology; review the stated factors before comparing this result with another calculator.
How to use your result
- Avoid unnecessary trips or combine several purposes into one journey.
- Prefer rail or coach where practical and choose direct economy flights when flying is necessary.
- Increase vehicle occupancy, use lower-emission vehicles and reduce distance.
- Address remaining estimated emissions only after reduction options have been considered.