{"slug":"unit-codes","listId":"UNECE Rec 20/21","listName":"Unit of measure codes (common)","description":"Common unit codes used for invoice line quantities (e.g., piece, hour, kilogram).","scopeNote":"This list focuses on units commonly used on invoices; official lists contain many more codes.","officialSource":{"label":"UNECE Recommendation 20/21 unit codes","url":"https://unece.org/trade/uncefact"},"dateModified":"2026-01-19","items":[{"code":"C62","label":"One","notes":null},{"code":"EA","label":"Each","notes":null},{"code":"PCE","label":"Piece","notes":null},{"code":"HUR","label":"Hour","notes":null},{"code":"MIN","label":"Minute","notes":null},{"code":"SEC","label":"Second","notes":null},{"code":"DAY","label":"Day","notes":null},{"code":"WEE","label":"Week","notes":null},{"code":"MON","label":"Month","notes":null},{"code":"ANN","label":"Year","notes":null},{"code":"MMT","label":"Millimetre","notes":null},{"code":"CMT","label":"Centimetre","notes":null},{"code":"MTR","label":"Metre","notes":null},{"code":"KMT","label":"Kilometre","notes":null},{"code":"MTK","label":"Square metre","notes":null},{"code":"MTQ","label":"Cubic metre","notes":null},{"code":"GRM","label":"Gram","notes":null},{"code":"KGM","label":"Kilogram","notes":null},{"code":"TNE","label":"Tonne","notes":null},{"code":"LTR","label":"Litre","notes":null}]}