Geodocs Tools

WKT Geometry Viewer

Paste a WKT geometry and visualize it on an interactive map. Select the projection and add multiple geometries. 100% browser-side processing — your data never leaves your device.

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WKT (Well-Known Text) is a text format standardized by the OGC (Open Geospatial Consortium) for representing vector geometries such as points, lines, polygons, and collections. It is widely used in spatial databases (PostGIS, Oracle Spatial, SQL Server), programming languages (Python/Shapely, Java/JTS, C++/GEOS), and GIS tools such as QGIS and ArcGIS. A simple example: POINT(-46.6333 -23.5505) represents the center of São Paulo in WGS 84 coordinates. WKT is the text representation of the binary WKB (Well-Known Binary) format, which is the standard for storage in databases.

This tool lets you paste one or more WKT geometries and visualize them on an interactive map, without installing any software. It is ideal for debugging geometries returned by APIs and databases, verifying that a geometry is correct before importing it, or simply understanding what a WKT string represents visually. You can also select the source projection (WGS 84, SIRGAS 2000, UTM) to automatically reproject to the map.

Paste a WKT geometry into the text area — for example: POLYGON((-46.7 -23.6, -46.6 -23.6, -46.6 -23.5, -46.7 -23.5, -46.7 -23.6)). Select the correct projection for your coordinates (WGS 84 for decimal degrees, UTM 23S for metric coordinates in São Paulo, etc.) and click 'Add to map'. You can add multiple geometries, click them to see details, and export the result as GeoJSON, KML, or CSV.

WKT is a pure geometry format — it represents only the geometric shape, without additional properties. It is mainly used in databases and code, not for exchanging complete feature datasets with attributes. GeoJSON is a complete feature format (geometry + properties) based on JSON, ideal for web APIs and open data. KML is Google Earth's XML format, with support for visual styles, widely used by field teams. Shapefile is a multi-file binary format from Esri, dominant in enterprise GIS and government data. In summary: WKT is for code and databases; GeoJSON is for web and APIs; KML is for Google Earth and field teams; Shapefile is for QGIS and legacy systems.

WKT is used primarily by software developers, data engineers, and GIS analysts who work with spatial databases. It is the standard output format of functions like ST_AsText() in PostGIS, and is accepted by ST_GeomFromText() for insertion. It is also used by geospatial libraries such as Shapely (Python), JTS (Java), and GEOS (C++). If you work with PostgreSQL + PostGIS, geospatial ETL processing, or application development with location data, you have almost certainly encountered WKT.

All processing happens locally, in your own browser. Your geometries are never sent to any server — not even ours. You can use this tool with confidential project data, critical infrastructure coordinates, or any sensitive data without any concern about privacy.