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Convert CSV to KML

Convert CSV (.csv) to KML (.kml) online for free. Fast, accurate geospatial format conversion with CRS reprojection.

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Upload your CSV file and get KML output in seconds.

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About CSV

Comma-Separated Values (CSV) files store tabular data with coordinate columns (latitude/longitude or WKT geometry). A simple, universal format supported by virtually all data tools.

Extensions: .csv
Software: Excel, Google Sheets, QGIS, Python/Pandas, R
Limitations: No built-in geometry type — requires coordinate columns. No CRS metadata. No support for complex geometries without WKT.

About KML

Keyhole Markup Language (KML) is an XML-based format for displaying geographic data in Earth browsers like Google Earth. It supports styling, icons, and 3D features.

Extensions: .kml
Software: Google Earth, Google Maps, QGIS, ArcGIS, Cesium
Limitations: Requires WGS 84 (EPSG:4326). Can become very large for complex datasets. Limited attribute handling.

How to Convert CSV to KML

  • Upload your CSV file (.csv)
  • Review detected layers, features, and coordinate system
  • Select KML as your output format
  • Choose a target coordinate reference system (optional)
  • Click Convert and download your KML file

Frequently Asked Questions

How do I convert CSV to KML?

Upload your CSV file to ConvertGeoData, review the detected data, select KML as the output format, and click Convert. Your converted file will be ready to download in seconds.

Is the CSV to KML conversion free?

Yes! ConvertGeoData offers free conversions for all users. No account required for basic conversions. Sign up for a Pro or Business plan for higher limits.

Can I change the coordinate system during conversion?

Yes. ConvertGeoData automatically detects your source CRS and lets you reproject to any EPSG coordinate reference system during conversion.

What software can open KML files?

KML files can be opened with Google Earth, Google Maps, QGIS, ArcGIS and more.

Does KML support different coordinate systems?

KML requires EPSG:4326. ConvertGeoData automatically reprojects your data to the correct CRS.

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No installation required. Works in your browser.

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