Declared unit

It is a measure of the quantity of a product used to report environmental impacts, especially in cases where the function of the product is not the primary focus of the assessment or when the LCA doesn't cover the entire life cycle (e.g., a cradle-to-gate study). The unit that all inputs, outputs and the results in the study are related to. Examples of declared units include

• 1 kg of steel
• 1 liter of paint
• 1 cubic meter of concrete
• 1 square meter of fabric
• 1 piece of packaging