An estimate for planning and disclosure preparation, not an audited figure. Informative only.
FAQ
How is business-travel CO2e calculated?
Flight distance (great-circle distance plus an 8% uplift) is multiplied by the UK DEFRA/DESNZ 2025 emission factor for the cabin, with radiative forcing included, then hotel nights and ground transport are added. The full method is shown on every result.
Which emission factors does it use?
The UK Government (DEFRA/DESNZ) 2025 conversion factors, the most widely used published set internationally. The model is distance-based, so it works for any route worldwide.
Does it include radiative forcing?
Yes. Flights include radiative forcing and an 8% great-circle distance uplift, in line with the DESNZ methodology, and this is stated on every result.
How much less does economy emit than business class?
Premium cabins are allocated more of the aircraft's emissions per passenger, so business class can be roughly two to three times economy on the same route. The tool shows the exact split for your route.
How can we cut business-travel emissions?
The biggest levers are flying economy instead of business, taking fewer or combined trips, choosing rail for short legs, and picking direct routes. The tool highlights your single biggest lever.
Is the figure audit-ready?
It is a disclosure-preparation estimate, not an audited figure, but every factor and formula is shown so it can be checked and reproduced.
