Plan your impact
Consider every move.
Estimate its impact.
Estimate the shipping emissions of your next project. Build a journey across air, sea and road, and explore how transport choices affect its footprint.
Plan your cargo
Crate volume calculator.
Enter the external packed dimensions of your crates. Group identical crates together to calculate total cubic metres and indicative air-freight volumetric weight.
Total volume
0 m³
Volumetric weight
Packed gross weight
Indicative chargeable weight
| Crate group | Quantity | Volume | Volumetric weight |
|---|
Volume = length × width × height × quantity, converted to metres. Volumetric weight = volume in cm³ ÷ the selected divisor. Indicative chargeable weight is the greater of total gross and total volumetric weight. Carrier rounding, minimum charges, non-stackability and per-piece rules can change billing. Confirm the divisor and tariff with your supplier. About air-freight chargeable weight.
Use packed physical gross weight for the carbon estimator, not volumetric billing weight. This volume tool does not assess container fit or cargo handling requirements.
Estimated shipment footprint
| Shipping leg | Mode | Distance | Estimate |
|---|
Compare modes over the same distance
A hypothetical comparison using the same total distance and weight for each mode, not alternative routed door-to-door itineraries. Modes may not be practical for your project.
Method & assumptions
Transparent estimates.
Each leg is calculated as: packed weight in tonnes × entered distance in kilometres × emissions factor in kg CO₂e per tonne-km. Leg results are summed. Factors include freight operation emissions and upstream fuel production (well-to-tank).
| Benchmark | Operating factor | Upstream fuel | Total kg CO₂e / tonne-km |
|---|---|---|---|
| Average diesel HGV, non-refrigerated, average laden | 0.10356 | 0.02359 | 0.12715 |
| Average container ship | 0.01612 | 0.00365 | 0.01977 |
| International air freight, without non-CO₂ uplift | 0.53130 | 0.13516 | 0.66646 |
| International air freight, with non-CO₂ uplift | 0.89939 | 0.13516 | 1.03455 |
Source: UK Government 2026 greenhouse gas conversion factors, “Freighting goods” and “WTT- delivery vehs & freight” worksheets. UK road averages are used as international planning proxies, not country-specific factors. International air factors use the published non-UK category. The source air factors already incorporate their methodology’s distance uplift; no additional uplift is applied here.
This calculator excludes warehousing, terminals, installation, crate production, staff travel and any legs you do not enter. It does not account for carrier-specific fuels, refrigerated transport, empty dedicated vehicle movements or volume-based allocation. It is not a certified inventory, an ISO 14083/GLEC compliance report or a carbon-offset claim. For reporting, use verified carrier and shipment data. City estimates use approximate city-centre coordinates and great-circle distance (Haversine). The initial city list contains 45 major hubs. The estimate button fills the distance field with straight-line kilometres for every mode. For road and sea, replace this value with the actual route distance before calculating; no road or sea routing service is connected. Calculations stay in your browser.