CO₂ Emission Estimator

Estimate CO₂ from marine fuel using editable emission factors. Single fuel, daily rate, or SFOC × power. Export PNG/PDF.

Choose based on available data.

A) From total fuel

Use mix for bunkers with multiple fuels.
If both tonnes and m³ are given, tonnes take priority. Otherwise m³ is converted via density.
Result

Total fuel: — t (— m³)

CO₂ total: — t

EF (weighted): — tCO₂/t

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Notes

Typical default emission factors (tCO₂ per tonne of fuel): HFO≈3.114, LFO≈3.151, MGO/MDO≈3.206, LNG≈2.750, LPG≈3.000, Methanol≈1.375, Ethanol≈1.913, ULSFO≈3.151, Biofuel (fossil carbon only)≈3.150, Ammonia≈0.

Density guidance @15 °C: HFO ~0.96–1.01; LFO/ULSFO ~0.93–0.99; MGO/MDO ~0.82–0.87; LNG (liquid) ~0.43–0.47; Methanol ~0.79; Ethanol ~0.79; LPG ~0.50–0.58.

Edit factors if you use an official factor set. This tool estimates direct CO₂ only (no CH₄/N₂O or well-to-wake).

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