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Car Travel Carbon Footprint Calculator

CO₂ (kg) = distance × fuel_consumption × emission_factor.

Calculates CO₂ emissions from a car journey from distance, fuel economy, and fuel type emission factor.

Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

CO₂_kg = (distance_km / 100) × L_per_100km × CO₂_per_litre

In depth

Calculates CO₂ emissions from a car journey from distance, fuel economy, and fuel type emission factor.