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Free calculator

Commute carbon footprint calculator

Choose how you travel to work and the distance to see your commute's yearly CO₂, and how other ways of making the same trip compare.

Free to use · nothing is stored · sources for every factor

Calculate your commute

Enter the one-way distance and how often you travel.

An estimate for awareness, not an audited figure.

Quick answer

How do I calculate the carbon footprint of my commute?

Multiply the kilometres you travel in a year by an emission factor for your mode of transport. A 15 km each-way commute, five days a week for 48 weeks, is 7,200 km a year; by car at 0.164 kg CO₂e per km that is about 1.2 tonnes, while by metro it is about 0.2 tonnes.

How the commute calculator works

It multiplies your yearly commute distance (one-way distance × 2 × days a week × weeks a year) by a factor for your mode. Sharing a car divides its emissions by the people in it. Electric vehicles use your vehicle's electricity per kilometre multiplied by India's grid factor of 0.710 kg CO₂ per kWh.

Mode Factor
Car (average) 0.164 kg CO₂e per km
Cab or taxi 0.208 kg CO₂e per km
Small motorbike or scooter 0.083 kg CO₂e per km
Bus 0.104 kg CO₂e per passenger-km
Metro 0.029 kg CO₂e per passenger-km
Train 0.035 kg CO₂e per passenger-km

Transport factors are from the UK DESNZ 2025 conversion factors, used as an approximation for India; electricity from the CEA CO₂ Baseline Database v21.

Ways to cut commute emissions

  • Switch some days to metro, bus or a shared ride.
  • Work from home on some days if your job allows.
  • If you drive, share the car: two people halve the per-person footprint.

For your whole footprint, try the carbon footprint calculator. Companies can plan an employee tree plantation programme around commute awareness.

Common questions

Is a two-wheeler better than a car?

Per kilometre, a small motorbike or scooter emits about half as much as an average car, using the DESNZ factors. Metro is lower still per passenger. Buses vary with how full they are: the average-bus factor we use is a little higher than a small two-wheeler.

How are electric vehicles counted?

By the electricity they use per kilometre multiplied by India's grid factor. Change the kWh per km under Assumptions to match your vehicle.

Does carpooling really help?

Yes. The car's emissions are shared, so two people in one car each have half the footprint of driving alone.

Why does the result use UK factors?

There is no complete official Indian set of per-kilometre factors for every mode, so we use the UK government set as an approximation.

How can I balance my commute?

Cut what you can first; then plant trees for the rest. Each tree is a 2-3 ft sapling, cared for three years and geo-tagged, from ₹299.

About Grow Billion Trees

Planting and caring for trees across India

We plant, geo-tag and look after every tree for three years, for companies, NGOs and families.

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