Trip emissions estimator
Trip emissions estimator: calculate a transparent estimate from the values and assumptions you provide.
Your inputs stay in your browser. Displayed results are rounded to a maximum of 12 significant digits.
Method and assumptions
Method version 1.0.0 · Updated
Calculate
Formula: emissions = distance × factor × (1 or 2); per person = total / travellers
Trip emissions estimator: calculate a transparent estimate from the values and assumptions you provide.
- distanceKm
- One-way distance (km)
- emissionFactorKgPerKm
- Emission factor (kg CO₂e/km)
- people
- Travellers sharing emissions
- roundTrip
- Trip type
Choose an emission factor matching transport mode, energy source and methodology.
Calculate with code
These short examples use the same inputs and core calculation as this tool. Adapt validation and formatting to your application.
JavaScript
const kgCO2e = 240 * 0.192; // 46.08 kg CO₂e (illustrative factor)