# Unit code

Standard code describing the unit of measure (e.g., piece, hour, kilogram).

## Definition

Standard code describing the unit of measure (e.g., piece, hour, kilogram).

## Explanation

Commonly comes from UNECE unit code lists.

Used on invoice lines for quantity.

## Related resources

- [Unit codes](/resources/code-lists/unit-codes)

## Related terms

- [Code list](/resources/glossary/code-list): A predefined set of allowed codes/values (e.g., VAT category, payment means).
- [Invoice line item](/resources/glossary/line-item): A single billed item/service line including quantity, price, and tax details.