Carbon Footprint Calculator
Meet Otto, your carbon advisor
Otto asks a few natural questions, estimates your footprint, and recommends exactly what to buy — with his reasoning shown, not hidden. Prefer a plain form? Use the quick calculator instead.
These are placeholder example projects for demonstration only — not real, purchasable carbon credits yet.
Otto isn't connected yet — this preview will go live once the backend is deployed. In the meantime, try the quick calculator.
Under ~1,500 km, e.g. within Europe
Intercontinental, round trip counts as one
Leave at 0 if you don't drive
Rough share of a typical NL household's heating footprint
Estimated footprint
0 tonnes CO2e / year
How we calculate this
Every carbon credit on OpenCarbon represents one metric tonne of CO2-equivalent (tCO2e). We convert your answers into an estimated yearly footprint using rough public emission-factor averages, then divide by 1 tonne and round up so you're always covering at least your full estimate.
| Activity | Assumed factor |
|---|---|
| Short-haul flight | ≈ 250 kg CO2e per flight |
| Long-haul flight | ≈ 1,100 kg CO2e per flight |
| Car travel | ≈ 0.17 kg CO2e per km (average petrol car) |
| Home heating | 0–1,440 kg CO2e per year depending on source |
| Diet | 1,500–3,300 kg CO2e per year depending on pattern |
These are illustrative averages, not a certified footprint audit. For a real purchase decision, we'll eventually support uploading actual utility and travel data instead of estimates.