Commuting footprint
This commuting carbon calculator turns your regular journey to work into an annual CO2e figure using DESNZ 2026 passenger transport factors. A 20 km each-way car commute in an average car adds up to roughly 1.5 tonnes of CO2e over a working year, while the same commute by rail is under a third of that.
TL;DR — Describe your usual commute per mode and how often you make it; we apply DESNZ 2026 per-km factors and annualise.
Step 1 of 1
Running total: 0.00 tCO2e
Your commute
Estimate your travel over a full year — a typical week × your working weeks.
Car commuting
Pick the car, then your annual commuting distance
Annual rail distance
Annual bus distance
How is it calculated?
- Car: DESNZ 2026 factors by car size (average car, unknown fuel: 0.16591 kgCO2e/km).
- Rail 0.03092, bus, London Underground and taxi per-passenger-km factors from DESNZ 2026.
- Walking and cycling count as zero direct emissions.
Every calculation runs server-side against a versioned official factor set and records the factor behind each line — see our methodology.
Frequently asked questions
- How much CO2e does commuting by car produce?
- An average car emits 0.16591 kgCO2e per km (DESNZ 2026). At 40 km per working day over ~230 working days, that is about 1.5 tonnes of CO2e a year for a single-occupancy car commute.