Circularity
Circularity is the degree to which products, components, materials, and other resources remain in use and retain value through strategies such as durability, reuse, repair, remanufacturing, and recycling, while reducing virgin resource inputs and waste. It describes a system property or performance direction, not a synonym for the wider circular economy.
In simple terms
Circularity asks how effectively a defined system keeps resources circulating at useful value and limits losses. It can be considered for a product, organization, sector, city, or economy, but the boundary and indicators must be stated. A high recycled-content percentage alone does not establish overall circularity: durability, utilization, repairability, safe material cycles, absolute resource use, leakage, and the quality of recovered outputs may also matter. Mass balance accounting can support traceability in some systems without proving the whole system is circular.
Why it matters
The term gives teams a way to discuss progress beyond a single waste or recycling measure. Used carefully, it supports product design, procurement, material-flow analysis, and system redesign. Used vaguely, it can hide burden shifting or celebrate one circular feature while total material demand, pollution, or value loss continues to rise.
Example
A furniture company assesses circularity across product life, not only recycled input. It measures service life, repair rates, component reuse, take-back participation, recovered-material quality, and virgin material demand within a stated boundary. The results show that modular repair preserves more value than shredding returned furniture for low-grade applications.
How it differs
Circular economy
Circularity describes how circular a defined system or flow is, while the circular economy is the broader economic system and transition intended to eliminate waste, circulate resources, and regenerate nature.