Convert geospatial data formats online
KML, Shapefile, GeoJSON, GPX, CSV and more — converted in your browser with automatic coordinate-system detection and RFC-validated output. No sign-up required.
Why Lat·Lng
- 11 — formats — read & write
- 8,112 — EPSG codes supported
- RFC 7946 — validated output
- 100% — processed in browser
- Auto CRS detection. Coordinate reference systems are detected and handled automatically — no manual EPSG guessing.
- Client-side by default. Conversions run in your browser; your files never leave your device unless you choose to save them.
- RFC 7946 validated. GeoJSON output is validated against RFC 7946 so it loads cleanly in every mapping library.
- Works at scale. Batch conversion and large-file support for production GIS workflows.
Popular converters
- Convert KML to GeoJSON
- Convert GeoJSON to KML
- Convert CSV to GeoJSON
- Convert GeoJSON to CSV
- Convert Shapefile to GeoJSON
- Convert GeoJSON to Shapefile
- Convert KML to Shapefile
- Convert Shapefile to KML
- Convert KML to CSV
- Convert CSV to KML
- Convert GeoJSON to GeoParquet
- Convert Shapefile to GeoParquet
Tools & reference
- Coordinate converter
- GeoJSON / file validator
- Coordinate reference systems (EPSG) reference
- Supported format reference
- API documentation
- Batch conversion
- Pricing
Frequently asked questions
What geospatial formats can I convert with Lat·Lng?
Lat·Lng supports 11 formats with full read and write: GeoJSON, KML, CSV, Shapefile (SHP), GPX, TopoJSON, WKT, WKB, GML, GeoParquet, and FlatGeobuf.
Is there a file size limit for conversions?
Free converts files up to 15 MB, Starter up to 100 MB, and Pro up to 1 GB per file.
Do you store my geospatial data?
Conversions run in your browser by default — files never leave your device unless you sign in to save them.