Convert and reproject geodata, right in your browser
Free conversion between 16+ GIS and CAD formats with survey-grade coordinate transformation — proper datum grids, not approximations.
Your files never leave your machine. No account, no upload, no limits.
Accurate where it matters
Datum transformations like NAD27→NAD83, OSGB36→WGS 84 or GDA94→GDA2020 need official distortion grids to be centimetre-accurate — without them, tools silently fall back to approximations that can be metres off. Reproj fetches the official PROJ grid for your transformation on demand, applies it locally, and tells you exactly which method was used and its stated accuracy. Every conversion comes with a transformation report.
Supported formats
ESRI Shapefile .shp .dbf .shx .prj
The long-standing GIS interchange workhorse. A "file" is really a bundle: .shp geometry, .dbf attributes, .shx index and .prj coordinate system — keep them together (or zip them).
GeoJSON .geojson .json
The web-native vector format — plain JSON, readable by every mapping library and most modern GIS tools. RFC 7946 expects WGS84 coordinates.
KML .kml
Keyhole Markup Language — Google Earth's format. Always WGS84 geographic coordinates; supports styling, descriptions and folders.
KMZ (zipped KML) .kmz
KML in a zip container — the compact form Google Earth saves and shares. Identical content to KML, a fraction of the size.
GeoPackage .gpkg
The modern OGC standard — a single SQLite file holding many layers, vector and raster, with no size or field-name limits. The recommended successor to Shapefile.
GPS Exchange Format .gpx
The universal GPS format for waypoints, tracks and routes. Always WGS84.
AutoCAD DXF .dxf
The CAD interchange format. CAD drawings carry no coordinate system — tell us the CRS the drawing was set out in and we handle the rest.
CSV (with coordinates) .csv
Plain-table points: columns for X/Y (or easting/northing, lon/lat) become geometry.
Microsoft Excel .xlsx
Spreadsheets with coordinate columns, straight to spatial data and back.
Geography Markup Language .gml
The OGC XML standard used by government cadastres and INSPIRE datasets across Europe.
FlatGeobuf .fgb
A modern binary format built for streaming and HTTP range requests — very fast, spatially indexed, cloud-native.
MapInfo TAB .tab .dat .map .id
MapInfo Professional's native format — a bundle of .tab/.dat/.map/.id files.
SQLite / SpatiaLite .sqlite .db
Spatial layers in a SQLite database, with optional SpatiaLite extensions.
MicroStation DGN .dgn
Bentley MicroStation design files (v7). Common in civil and infrastructure work.
TopoJSON .topojson
GeoJSON's topology-preserving sibling — shared boundaries stored once, much smaller files.
GeoJSON Sequence .geojsonl .ndjson
Newline-delimited GeoJSON features — streamable and appendable, good for pipelines.