Units of Measure (UNECE Recommendation 20)

Version 1.0.0 • Published May 07, 2026 00:00 UTC • by United Nations Economic Commission for Europe (UNECE), RefPack

Standardized unit of measure codes from UNECE Recommendation 20, merging Annex I (normative) and Annex II/III (informative). Excludes deprecated and removed units. Includes status, common code, name, description, level/category, symbol, and conversion factor.

Download v1.0.0 (.zip)

Units of Measure (UNECE Recommendation 20)

Overview

Dataset Structure

Field	Type	Required
`Status`	string	No
`CommonCode`	string	Yes
`Name`	string	Yes
`Description`	string	No
`LevelAndCategory`	string	Yes
`Symbol`	string	No
`ConversionFactor`	string	No

Sample Entries

Status	CommonCode	Name	Description	LevelAndCategory
X	05	lift		3.9
X	06	small spray		3.9
X	08	heat lot		3.9
	10	group	A unit of count defining the number of g	3.9
	11	outfit	A unit of count defining the number of o	3.9

Usage Scenarios

Scientific and engineering unit conversion systems
International trade quantity specification
ERP and inventory management requiring unit standardization
IoT sensor data normalization and interoperability

Data Integrity

The CommonCode field serves as the unique identifier.
Required fields: CommonCode, Name, LevelAndCategory
Additional properties are disallowed.

Metadata & Versioning

Dataset ID: units_of_measure
Version: 1.0.0
Created (UTC): 2026-05-07T00:00:00Z
Title: Units of Measure (UNECE Recommendation 20)
Authors: United Nations Economic Commission for Europe (UNECE), RefPack
License: Public Domain
Tags: units, measurement, unece, recommendation 20, standards, technical, codes, si, cat005

Field Name	Field Type	Sample Values
CommonCode	string	05 06 08
ConversionFactor	string	10⁻¹ x m³/kg 10³ kg/m³ 10 kg/m²
Description	string	A unit of count defining the number of groups (group: set of items classified together). A unit of count defining the number of outfits (outfit: a complete set of equipment / materials / objects used for a specific purpose). A unit of count defining the number of rations (ration: a single portion of provisions).
LevelAndCategory	string	3.9 3.3 3.4
Name	string	lift small spray heat lot
Status	string	X D ¦
Symbol	string	dl/g g/cm³ g/cm²

Field Name	Type	Description	Constraints
CommonCode *	`string`
LevelAndCategory *	`string`
Name *	`string`
ConversionFactor	`string`
Description	`string`
Status	`string`
Symbol	`string`

Full `data.changelog.json` Content (v1.0.0)

[
  {
    "version": "1.0.0",
    "date": "2026-05-07",
    "description": "Initial release"
  }
]

Full `data.schema.json` Content (v1.0.0)

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "Units of Measure (UNECE Recommendation 20) Schema",
  "type": "array",
  "items": {
    "type": "object",
    "properties": {
      "Status": {
        "type": "string",
        "description": ""
      },
      "CommonCode": {
        "type": "string",
        "description": ""
      },
      "Name": {
        "type": "string",
        "description": ""
      },
      "Description": {
        "type": "string",
        "description": ""
      },
      "LevelAndCategory": {
        "type": "string",
        "description": ""
      },
      "Symbol": {
        "type": "string",
        "description": ""
      },
      "ConversionFactor": {
        "type": "string",
        "description": ""
      }
    },
    "required": [
      "CommonCode",
      "Name",
      "LevelAndCategory"
    ],
    "additionalProperties": false
  }
}

Units of Measure (UNECE Recommendation 20)

Units of Measure (UNECE Recommendation 20)

Overview

Dataset Structure

Sample Entries

Usage Scenarios

Data Integrity

Metadata & Versioning

Data Preview (`data.json` - First 3 Records of v1.0.0)

Units of Measure (UNECE Recommendation 20) Schema (v1.0.0)

Suggested Key Fields:

Changelog for Package v1.0.0

Version 1.0.0

Available Versions for units_of_measure

Version 1.0.0 Current

Report an Issue

Reporting Guidelines

Units of Measure (UNECE Recommendation 20)

Units of Measure (UNECE Recommendation 20)

Overview

Dataset Structure

Sample Entries

Usage Scenarios

Data Integrity

Metadata & Versioning

Data Preview (data.json - First 3 Records of v1.0.0)

Units of Measure (UNECE Recommendation 20) Schema (v1.0.0)

Suggested Key Fields:

Changelog for Package v1.0.0

Version 1.0.0

Available Versions for units_of_measure

Version 1.0.0 Current

Report an Issue

Reporting Guidelines

Full data.json Content (v1.0.0)

Full data.changelog.json Content (v1.0.0)

Full data.schema.json Content (v1.0.0)

Data Preview (`data.json` - First 3 Records of v1.0.0)

Full `data.json` Content (v1.0.0)

Full `data.changelog.json` Content (v1.0.0)

Full `data.schema.json` Content (v1.0.0)