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
Based on DEFRA emission factors with radiative forcing applied to aviation.
| Trip | CO₂e | Offset cost |
|---|---|---|
| London → New York (return) | ~1,000 kg CO₂e | ~€40 |
| Short-haul flight (1 hr) | ~150 kg CO₂e | ~€6 |
| Road trip 500km (petrol car) | ~90 kg CO₂e | ~€3.60 |
| Cruise (7 days) | ~1,800 kg CO₂e | ~€72 |
| Train 500km (EU) | ~10 kg CO₂e | ~€0.40 |
Prices at €0.04/kg CO₂e. See methodology.
How It Works
- 1
Describe your trip — "I flew from London to Barcelona return, economy class"
- 2
Our AI extracts flight details and applies DEFRA emission factors with radiative forcing
- 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, vehicle or fuel type, occupancy and, where known, fuel use. Sharing a vehicle divides journey emissions across passengers.
Rail and public transport
Distance and transport type, with regional electricity and operating assumptions where factors provide them.
Cruises and ferries
Distance or duration, vessel category and passenger allocation. Accommodation and onboard energy make cruise estimates different from simple ferry crossings.
How to improve accuracy
Use actual routes rather than straight-line guesses, include return legs and connections, and enter real vehicle efficiency or fuel use when available. For flights, cabin class and stopovers can materially change the estimate. 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.