Free tools · Travel
Commute emissions calculator
Compare how you get to work. Enter your one-way distance and work days. See the CO2 and the cost a year by car, Karwa bus, Doha Metro, taxi, and bike or walking.
Your commute a year
Fill in the form and press Compare.
| How | kg CO2e | QAR |
|---|
How we work it out
Emissions are UK DESNZ 2025 factors per passenger km: petrol cars by size, average local bus 0.10385, regular taxi 0.14861, and light rail 0.0286 for the Doha Metro. The rail and bus factors reflect UK grids and loads, not Qatar. Qatar's grid is more carbon heavy than the UK's, so the real metro figure is likely higher. We count a return trip each work day. Car cost is fuel only: 9 litres per 100 km (our assumption) at QAR 2.1 per litre Super 95. Bus fare of QAR 3 a trip is our assumption, since Karwa fares depend on distance. Parking, insurance and car wear are not counted.
Sources
Questions
Is the Doha Metro better for the climate than driving?
Yes. Per passenger km, a medium petrol car driven alone is about 0.175 kg CO2e. Light rail is about 0.029 kg in UK data. Even if Qatar's gas-fired grid doubles the metro figure, the metro is still far lower.
How much is a Doha Metro ticket?
A standard class single journey is QAR 2. A day pass is QAR 6. Gold class costs more. Fares from the Qatar Living transport guide. Check the Qatar Rail app for current prices.
How much is a Karwa taxi?
Guides list a QAR 4 starting fare and about QAR 1.6 per km in Doha by day, with a higher night rate. Ride-hail apps set their own prices.
Why is a taxi lower CO2 than my own car?
DESNZ counts taxi emissions per passenger and assumes more than one person on average. If you ride alone, a taxi is close to a medium car.
Is cycling realistic in Doha?
For part of the year, and for short trips, yes. Cycling and walking have no tailpipe emissions. Many people combine a bike or e-scooter with the metro.
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