Material circularity indicator
Material circularity indicator is a quantitative indicator of how restorative a product's material flows and use characteristics are compared with a linear model. Applying Material circularity indicator requires a stated material pathway, lifecycle stage, retained function, waste status, and end-of-life route.
In simple terms
In practical use, Material circularity indicator is a quantitative indicator of how restorative a product's material flows and use characteristics are compared with a linear model. For Material circularity indicator, the reported value needs a visible unit, denominator, calculation method, uncertainty treatment, and data-quality statement within a declared material pathway, lifecycle stage, retained function, waste status, and end-of-life route. The score depends on material inputs, recovery routes, utility, lifetime, and methodology; it is not a complete impact assessment. Material circularity indicator connects with Material footprint and Waste hierarchy; each can affect its application without sharing its definition. The candidate link between Material circularity indicator and Pre-consumer recycled content remains a separate expansion question supported here by Ellen MacArthur Foundation.
Why it matters
Material circularity indicator matters because decisions about it determine which lifecycle route is preferred, how much function or material value is retained, and where responsibility ends. A defensible use of Material circularity indicator therefore exposes its boundary, method, evidence, responsible actor, and uncertainty before a conclusion is accepted. That discipline keeps Material footprint and Waste hierarchy from being treated as proof of Material circularity indicator when their criteria, scope, or results differ.
Example
A product and materials team evaluates Material circularity indicator for a defined decision and records the relevant material pathway, lifecycle stage, retained function, waste status, and end-of-life route. For Material circularity indicator, the team uses cited material from Ellen MacArthur Foundation to calculate the measure with documented inputs, units, and denominator, documenting the period, data, assumptions, and comparison with Material footprint. It treats Waste hierarchy and Pre-consumer recycled content as separate questions rather than proxies for Material circularity indicator.
How it differs
Material footprint
Material circularity indicator is a measure; Material footprint has a different function. Evidence for Material footprint does not establish Material circularity indicator unless both sets of applicable criteria are met.