Combine purchased goods, inbound logistics, supplier energy, waste, and other measured sources into a supply-chain carbon footprint.
The total is a roll-up of the entered upstream source groups. The largest-source and purchased-goods share results help prioritize data improvement and supplier action.
This calculator adds existing emissions estimates; it does not create emission factors or guarantee alignment with a particular Scope 3 inventory method.
Purchased goods of 12,500, logistics of 2,400, supplier energy of 1,800, waste of 350, and other sources of 950 tCO2e total 18,000 tCO2e. Purchased goods represent 69.44%.
Enter the emissions assigned to purchased products and services under your chosen inventory method, excluding amounts entered again in other fields.
They can be combined for planning if boundaries and units are compatible, but document the method for each source and avoid overlap.
Check whether supplier product footprints already include delivery to your gate. If they do, do not add the same transport emissions separately.
No. It provides a flexible subtotal for selected upstream sources. Include additional measured sources in Other or use a fuller category-by-category inventory.
It identifies where better primary data, supplier engagement, specification changes, or procurement decisions may have the greatest effect.
| Variable | Meaning |
|---|---|
| Purchased goods | Products and services acquired during the period. |
| Inbound logistics | Upstream transport not embedded in another estimate. |
| Supplier energy | Allocated emissions from supplier operations. |
| Supply-chain waste | Waste treatment and disposal in the selected boundary. |
| Other sources | Additional upstream emissions not counted above. |