What is packaging material matching?
When you upload packaging data, Root needs to know the environmental impact of each material used in your packaging β for example, how much CO2 is produced per kilogram of cardboard or plastic film.
To do this, each packaging material you upload needs to be linked to an impact dataset: a reference record that contains the environmental footprint for that type of material. This linking step is what we call packaging material matching.
Unlike regular BOM materials (where Root suggests matches automatically using AI), packaging materials are matched by selecting from a predefined list of packaging categories and types. This is because packaging materials fall into well-defined categories, making a structured dropdown more practical than free-text matching.
If any Packaging materials are missing from the predefined list: please reach out to us and we will add it to the list.
How to match your packaging materials
Go to the Matching section, and click on the Packaging materials chapter. You'll see a list of all your packaging materials with their current status:
Status | What it means |
Complete | The material is matched to a dataset and has a valid unit conversion. Ready for calculations. |
Incomplete | Either no dataset has been selected, or a unit conversion is missing. Needs your attention. |
Select a matching dataset
For each unmatched material, open the match options. You'll see a structured list organized by category and type:
Select the option that best describes your material. Each option shows its environmental impact per kilogram so you can verify you're picking the right one.
Set unit conversions (if needed)
If your packaging quantities are in a different unit than the dataset expects, you'll need to provide a conversion factor.
For example, if your packaging structure specifies plastic film in square meters but the dataset measures impact per kilogram, you'll need to tell Root how many kilograms one square meter of your specific film weighs.
Common conversions (like grams to kilograms) are handled automatically. You only need to provide a factor when Root can't convert between the units on its own.
Product packaging vs. logistics packaging
Root tracks two types of packaging, both matched the same way:
Product packaging is the packaging that comes with each unit of your product (e.g. the box and plastic wrap around a phone). Its environmental impact is multiplied by the number of units purchased or sold.
Logistics packaging is the packaging used at your facilities for shipping and storage (e.g. pallets, bubble wrap, stretch film). Its impact is based on the total amount consumed at each facility over a given period.
Both types use the same packaging material records and datasets β the difference is only in how quantities and impacts are calculated.
How packaging impact is calculated
Once a material is matched and unit conversions are in place, Root calculates the impact as:
For product packaging:
Impact = dataset impact per unit x quantity per product x number of products x conversion factor
For logistics packaging:
Impact = dataset impact per unit x total amount consumed x conversion factor
Unmatched materials (status: incomplete) are excluded from calculations, so completing your matches is important for accurate results.
Tips
Start with the most-used materials. Focus on matching materials that appear across many products or facilities first β they'll have the biggest effect on your results.
Check the unit. Make sure the unit in your packaging structure (g, kg, m2, etc.) is compatible with the dataset unit, or provide a conversion factor.
Supplier details are optional but useful. Adding supplier name and address to your packaging materials helps with address validation and traceability, though it doesn't affect the impact matching itself.

