Estimate a product's cradle-to-delivery carbon footprint from material mass, manufacturing energy, and freight activity, then allocate the result across the production batch. Editable emissions factors make the arithmetic transparent and adaptable to your data. The output covers only the included stages and should not be presented as a complete life-cycle assessment without a defined boundary and verified inventory.
The main result is the included carbon footprint per good unit. Source shares help prioritize data improvement and reduction work within this simplified boundary.
Excluded stages may include packaging, capital equipment, warehousing, use, maintenance, end of life, land-use change, and supplier processes not represented by the material factor.
A batch using 1,000 kg of material at 2.5 kg CO₂e/kg, 5,000 kWh at 0.4 kg CO₂e/kWh, and 2,000 tonne-km at 0.1 kg CO₂e/tonne-km totals 4,700 kg CO₂e. Across 1,000 good units, that is 4.70 kg CO₂e per unit.
No. It estimates only the material, manufacturing-energy, and freight stages entered.
Dividing by saleable good output allocates scrap and process losses to the products actually produced.
Multiply shipment mass in metric tons by the distance traveled in kilometers for each freight leg, then sum the legs.
Yes, if the factor has compatible units, scope, and product boundary and is appropriate for the reporting purpose.
The batch and per-unit estimates are zero; source shares are reported as zero rather than producing a division error.
| Variable | Meaning |
|---|---|
| Materials | Material mass × material emissions factor |
| Manufacturing energy | Energy use × energy emissions factor |
| Freight | Tonne-kilometers × freight emissions factor |
| Functional output | Good units used to allocate batch emissions |