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9 toolsCoordinate Conversion
Convert between WGS84, UTM, OSGB, and 100+ coordinate systems in batch or single mode.
EPSG Code Lookup
Search CRS codes by name, datum, projection, or area and copy proj4 strings.
DMS ↔ Decimal Degrees
Instantly convert between degree-minute-second and decimal degree notation.
GeoJSON Viewer
Visualize and validate GeoJSON on an interactive Leaflet map with feature inspection.
Bounding Box Extractor
Extract bbox from GeoJSON as array, WKT polygon, or URL bbox parameter.
CSV → GeoJSON
Map lat/lon columns from any CSV to GeoJSON Point features, with all other columns preserved as properties.
Tile Calculator
Enter a lat/lon and zoom level to get XYZ tile coordinates, tile bounds, quadkey, and a live map preview of the tile.
SLD Style Editor
Build GeoServer SLD styles for vector layers visually — point, line, and polygon symbolizers with OGC filter rules and text labels.
Spatial SQL Playground
Run SQL queries against GeoJSON or CSV data in the browser using SQLite — with spatial functions like ST_Area, ST_Length, ST_Distance, and ST_GeomType.
In Development
8 toolsCSV to Shapefile
Convert a CSV with coordinate columns into a downloadable shapefile.
Spatial Join
Join attributes from one GeoJSON layer to another based on spatial relationships.
Area & Distance Calculator
Measure area and distance of GeoJSON features using geodesic calculations.
Clip Tool
Clip a GeoJSON layer to the extent of another.
Merge Layers
Combine multiple GeoJSON FeatureCollections into a single layer.
Raster Calculator
Apply band math expressions to raster images directly in the browser.
Topology Checker
Validate GeoJSON topology, detect overlaps, gaps, and self-intersections.
Buffer Tool
Create geodesic buffers around GeoJSON features at a specified distance.