---
title: How do different industry classification standards relate to each other?
description: An overview of the main Industry Classification standards and how they are connected.
---

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# How do different industry classification standards relate to each other?

## An overview of the main industry classification standards and how they are connected.

#### **Main Standards: ** North Data supports the following standards: 

- [WZ 2025](https://de.wikipedia.org/wiki/Klassifikation_der_Wirtschaftszweige): Germany
-  [NAICS](https://de.wikipedia.org/wiki/North_American_Industry_Classification_System): North America
-  [ISIC](https://de.wikipedia.org/wiki/International_Standard_Industrial_Classification): The international standard from the United Nations. 
- [NACE](https://de.wikipedia.org/wiki/Statistische_Systematik_der_Wirtschaftszweige_in_der_Europ%C3%A4ischen_Gemeinschaft): European Union
- [UK SIC](https://en.wikipedia.org/wiki/United_Kingdom_Standard_Industrial_Classification_of_Economic_Activities): United Kingdom (from 2007, also based on NACE Rev. 2.1. NOT to be confused with the older North American SIC.)

#### **Individual Standards: **

**North America**

- [SIC](https://de.wikipedia.org/wiki/Standard_Industrial_Classification): Older classification system
- [NAICS:](https://de.wikipedia.org/wiki/North_American_Industry_Classification_System)Newer System, largely replaces the SIC

**International**

-  [ISIC](https://de.wikipedia.org/wiki/International_Standard_Industrial_Classification): The international standard from the United Nations. The current version is Revision 4 (from 2008). It forms the basis for many national and regional classifications, including the European NACE and the German WZ classification. 

**Europe**

- [NACE](https://de.wikipedia.org/wiki/Statistische_Systematik_der_Wirtschaftszweige_in_der_Europ%C3%A4ischen_Gemeinschaft): European Union
- [WZ 2025](https://de.wikipedia.org/wiki/Klassifikation_der_Wirtschaftszweige): Germany
- [ÖNACE](https://de.wikipedia.org/wiki/Statistische_Systematik_der_Wirtschaftszweige_in_der_Europ%C3%A4ischen_Gemeinschaft)Austria
- NOGA Switzerland

#### **How the standards relate to each other: **

The standards are not independent - many are based on each other: 

- ISIC (UN standard) forms the global base. 
- NACE (EU) is based on ISIC 
- WZ (Germany) is based on NACE
- [ÖNACE (Austria)](https://de.wikipedia.org/wiki/Statistische_Systematik_der_Wirtschaftszweige_in_der_Europ%C3%A4ischen_Gemeinschaft) and NOGA (Switzerland) are both also based on NACE (EU)
- UK SIC is based on NACE (it is not the same as the North American SIC)

At first glance, the variety of standards may seem confusing – but in fact, they are largely compatible. The classifications NACE, WZ, and UK SIC are based on a common system.    
   
The Industry Segment filter of the [Power Search](https://www.northdata.com/), you can select different classification standards. North Data automatically converts (i.e. *translates*) data from one standard to another. 

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