Batch Convert FlatGeobuf to S57 Nautical Charts
Convert hundreds of FlatGeobuf files to S57 Nautical Charts in a single operation. Runs in your browser — no uploads, no file-count limits.
About FlatGeobuf
FlatGeobuf is a binary, columnar encoding of OGC Simple Features backed by FlatBuffers. It is designed for streaming and random-access reads directly from cloud storage without downloading the entire file, making it the preferred format for high-performance web GIS pipelines.
You might convert from FlatGeobuf when a target system does not yet support the format natively, when you need to share data in a more universally recognised format such as GeoJSON or Shapefile, or when you need to inspect the features in a desktop GIS that expects a different input.
Frequently asked questions
What are the advantages of FlatGeobuf over GeoJSON?
FlatGeobuf is binary and uses an R-tree spatial index, so large datasets can be read much faster with spatial filtering. GeoJSON is text-based and must be fully parsed before any feature can be accessed. For static file hosting and cloud-based streaming, FlatGeobuf is significantly more efficient.
Does FlatGeobuf support all geometry types?
Yes — FlatGeobuf supports all OGC Simple Feature geometry types including Point, LineString, Polygon, MultiPoint, MultiLineString, MultiPolygon, and GeometryCollection, as well as 3D and M coordinate dimensions.
Can I open a FlatGeobuf file in QGIS?
Yes — QGIS supports FlatGeobuf natively from version 3.16 onward. You can also open .fgb files in any GDAL-powered application compiled with FlatGeobuf support.
Only have one file?
Our single-file FlatGeobuf to S57 Nautical Charts converter is free and handles one file at a time.