Train Carbon Footprint Calculator

Calculate rail journey emissions and compare with flying and driving.

About Train Carbon Footprint Calculator

Electric rail emissions depend entirely on the grid supplying it, so the same train is nearly carbon-free in France and considerably worse in a coal-dependent grid. Even so, rail beats flying by a wide margin almost everywhere. Rail typically cuts emissions by 80 to 90 per cent against flying for the same route, which makes it the largest single reduction a traveller can make.

Formula

Train Carbon Footprint

Electric rail emissions = energy per passenger km × grid carbon intensity

grid intensity: Rail emissions depend on how the electricity is generated
passenger kilometre: Energy divided across the passengers carried

Worked example

With the default values below, Train Carbon Footprint Calculator returns Total Emissions of 22.000. Change any input above and every figure here is recalculated in your browser.

Inputs used

Distanceminimum 0 km: 800 km
Train typeone of Electric high speed, Electric regional, Diesel regional, Sleeper: Electric high speed
Grid carbon intensityminimum 0 kg/kWh: 0.25 kg/kWh
Return journeyone of Yes, No, one way: Yes

Results

Total Emissions: 22.000 kg CO2e
Emissions per Kilometre: 13.75 g CO2e
Emissions if Flying: 408.00 kg CO2e
Saving Against Flying: 386.00 kg CO2e
Reduction Against Flying: 94.61%

Step by step

1Values used
2Train Carbon Footprint
3Total Emissions= 22.000 kg CO2e
4Emissions per Kilometre= 13.75 g CO2e
5Emissions if Flying= 408.00 kg CO2e
6Saving Against Flying= 386.00 kg CO2e
7Reduction Against Flying= 94.61

Assumptions and limits

The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 3 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How is Train Carbon Footprint calculated?

Electric rail emissions = energy per passenger km × grid carbon intensity Electric rail emissions depend entirely on the grid supplying it, so the same train is nearly carbon-free in France and considerably worse in a coal-dependent grid. Even so, rail beats flying by a wide margin almost everywhere.

Why does Train Carbon Footprint matter?

Rail typically cuts emissions by 80 to 90 per cent against flying for the same route, which makes it the largest single reduction a traveller can make.

What values do I need to enter?

This calculator takes 4 inputs: Distance, Train type, Grid carbon intensity, Return journey. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.