Calculator Inputs
The page flows in a single-column structure, while the input area uses three columns on large screens, two on smaller screens, and one on mobile.
Example Data Table
| Scenario | Mode | Distance (km) | Payload (kg) | Shipments | Load Factor | Warehouse kWh | Estimated Total CO2e |
|---|---|---|---|---|---|---|---|
| Regional retail replenishment | Road | 850 | 1,200 | 12 | 78% | 120 | ~2,428.06 kg |
| International air express | Air | 2,400 | 650 | 6 | 70% | 40 | Much higher intensity |
| Port-to-warehouse import | Sea | 3,100 | 8,000 | 3 | 85% | 180 | Usually lower transport intensity |
Formula Used
Transport Weight (kg) = Payload Weight + Packaging Weight
Tonne-km = (Transport Weight / 1000) × Distance × Number of Shipments
Effective Factor = Base Mode Factor × Fuel Modifier
Load Adjustment = 100 / Load Factor
Route Adjustment = 1 + (Route Inefficiency / 100)
Linehaul Emissions = Tonne-km × Effective Factor × Load Adjustment × Route Adjustment
Empty Return Emissions = Linehaul Emissions × Empty Return %
Reefer Emissions = Linehaul Emissions × Reefer Share % × 0.20
Warehouse Emissions = Warehouse kWh × Grid Factor × Number of Shipments
Packaging Emissions = Packaging Weight × Packaging Factor × Number of Shipments
Total Emissions = Linehaul + Empty Return + Reefer + Warehouse + Packaging
This model is practical for planning and benchmarking. For audited reporting, replace defaults with lane-specific carrier factors or verified primary data.
How to Use This Calculator
- Enter a shipment label for your records.
- Choose the transport mode and fuel type.
- Provide distance, payload weight, packaging weight, and shipment count.
- Set operational assumptions like load factor, empty return, reefer share, and route inefficiency.
- Add warehouse energy and the local grid emission factor.
- Optionally enter a custom emission factor when you have carrier-specific data.
- Press Calculate Carbon Footprint.
- Review the totals, intensity metrics, chart, and breakdown table.
- Use the CSV or PDF buttons to export the results.
FAQs
1) What does this calculator estimate?
It estimates logistics-related carbon emissions from transport activity, empty returns, reefer operations, warehousing energy, and packaging impacts. It is useful for internal planning, ESG dashboards, and comparing operational scenarios before shipment decisions.
2) Why is load factor important?
A lower load factor means the vehicle carries less useful product for the same trip. That raises emissions per delivered tonne, which often becomes one of the largest controllable drivers in freight footprint analysis.
3) What is tonne-km?
Tonne-km measures one metric tonne moved over one kilometre. It is a standard logistics intensity unit and allows fairer comparisons across shipment sizes, routes, and transport modes.
4) Can I use carrier-specific factors?
Yes. Enter a custom emission factor override when you have verified carrier or lane data. That replaces the built-in default mode factor and makes the output more suitable for company-specific reporting.
5) Why are packaging emissions separate?
Packaging affects emissions in two ways. It adds transport weight and also has embodied carbon from material production. This calculator includes both effects for a more complete operational estimate.
6) Does refrigerated transport increase emissions?
Usually yes. Refrigeration needs extra energy during transit. This calculator applies an added reefer burden based on the refrigerated share, giving you a practical uplift for cold-chain planning.
7) Is this suitable for formal assurance reporting?
It is suitable for screening, planning, and benchmarking. For assured external reporting, use primary supplier data, audited factors, and the specific accounting rules required by your reporting framework.
8) Which reduction levers should I test first?
Start with better load consolidation, shorter routes, fewer empty returns, lower-carbon modes, cleaner fuels, efficient cold-chain practices, and lower-emission packaging. Those changes often deliver measurable carbon improvements quickly.