SOSI

gis

SOSI is an abbreviation of Samordnet Opplegg for Stedfestet Informasjon, translating to Systematic Organisation of Spatial Information in English. SOSI is a file format used for exchanging digital geodata published initially in 1987 by the Norwegian Mapping Authority. The standard includes definitions for geometry, topology, data quality, coordinate systems, attributes and metadata. It is a widely used in file format for Norwegian map data.

Identify it

Not sure your file is this? Identify it from its first bytes, in your browser.

Open it

• GMSreads

Convert it

No conversion recorded. One of the tools above may export it; search for a chain.

Versions and variants (3)

• SOSI 4.1Unknown
• SOSI 4.5Unknown
• SOSI 8.1Unknown

Sources

• PRONOM fmt/1246
• Wikidata Q11999021

From PRONOM, Wikidata. Updated 2026-10-20.

Improve this record JSON