Ecology

Car vs Bike Calculator

Find CO₂ and money saved by biking instead of driving.

One-way distance

Round trips per week

Car CO₂ (g/km)

Calculated Output

CO₂ saved/year 707.2

Distance biked/year 4.16

Calories burned/year (kcal) 124,800

Formula: CO₂ saved = annual km × car g/km ÷ 1000

Step-by-Step Breakdown

1. Values used:

2. One-way distance = 8

3. Round trips per week = 5

4. Car CO₂ = 170 g/km

6. CO₂ saved/year = 707.2

7. Distance biked/year = 4.16

8. Calories burned/year = 124,800kcal

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The math behind it

annual km = one-way × 2 × trips/week × 52; CO₂ saved = km × car g/km ÷ 1000; cycling burns ~30 kcal/km.

8 km, 5 trips/week → 4,160 km, ~707 kg CO₂ saved.

EV instead?

Lower the car g/km to compare with an electric car.