Is this the official WZ → SBI mapping?

Yes. Both classifications are anchored on NACE via the correspondence tables published by Eurostat and the national statistical institutes (the national institute for WZ, the national institute for SBI). We surface those mappings directly.

What revision year does this cover?

The 2025 vintages (WZ aligned to NACE Rev. 2.1 where applicable, SBI aligned to its 2025 national republication). Historic vintages are available on request.

Why does the tool pass through NACE?

NACE is the shared European anchor. Every national classification is defined in terms of NACE, so anchoring cross-country conversions on NACE is how the national statistical institutes themselves resolve them — it's exact, not an approximation.

Can I bulk-convert a spreadsheet?

Yes — the JSON/CSV API accepts arrays of codes and returns the same mapping. See the developer docs for endpoints and rate limits.

WZ → SBI

WZ → SBI converter

Convert a German WZ code to the matching Dutch SBI 2008 class — with example codes, an official mapping, and the reverse lookup one click away.

WZ → SBI

Open the WZ → SBI converter →Decode a single code →

WZ (Germany) and SBI (Netherlands) are both national statistical classifications aligned to the European NACE framework, so every code has a well-defined equivalent on the other side.

This converter reads a WZ code, resolves the matching NACE class from the official correspondence, and returns the equivalent SBI code(s). It's the same result you'd get by looking up both codes side-by-side in the Eurostat RAMON tables.

If a WZ code maps to more than one SBI code (splits happen when national institutes disagree on granularity), we show every candidate so you can pick the right one for your context.

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FAQ

Is this the official WZ → SBI mapping?: Yes. Both classifications are anchored on NACE via the correspondence tables published by Eurostat and the national statistical institutes (the national institute for WZ, the national institute for SBI). We surface those mappings directly.
What revision year does this cover?: The 2025 vintages (WZ aligned to NACE Rev. 2.1 where applicable, SBI aligned to its 2025 national republication). Historic vintages are available on request.
Why does the tool pass through NACE?: NACE is the shared European anchor. Every national classification is defined in terms of NACE, so anchoring cross-country conversions on NACE is how the national statistical institutes themselves resolve them — it's exact, not an approximation.
Can I bulk-convert a spreadsheet?: Yes — the JSON/CSV API accepts arrays of codes and returns the same mapping. See the developer docs for endpoints and rate limits.