Compare Travel Emissions — Picture Zero

Compare Travel Emissions

Carbon, time and indicative cost — car vs rail vs flight.

How the figures are calculated
Road distance & duration come from Google's Directions API. Rail and flight legs use straight-line distance plus a routing factor (1.2× for rail, 1.1× for flight); the car leg to the station/airport and the taxi leg at the far end both use Google. Emission factors are from the UK Government GHG Conversion Factors 2025 (DEFRA/DESNZ) per passenger-km: car 163 g, taxi/Uber 148 g, rail 35 g, domestic flight 229 g (incl. radiative-forcing uplift). The rail and flight options assume you drive to the origin hub (with parking) and take a taxi/Uber from the destination hub. Costs are rule-of-thumb 2025/2026 UK averages — see each card's breakdown.
Privacy & data
All routing requests go directly from your browser to Google. Nothing is stored on a server.