WKB to GeoJSON Converter — free & private
Paste hex/base64 or upload a .wkb binary and get a GeoJSON geometry instantly. Runs fully in your browser.
FAQ
Hex or base64?
Paste either. You can also upload a .wkb file; we’ll detect the format automatically.
EWKB SRID handling?
We read EWKB (with SRID) as well as plain WKB. GeoJSON itself is output without CRS metadata; coordinates are shown as-is.
What geometry types?
All standard OGC geometry types supported by wkx (Point, LineString, Polygon, Multi*, GeometryCollection).
GeoJSON output format?
We output a single GeoJSON geometry object. For convenience, the map preview wraps it in a one-feature FeatureCollection.
Multiple geometries in one WKB?
If your WKB encodes a MultiPoint/MultiLineString/MultiPolygon or a GeometryCollection, the decoded GeoJSON preserves that structure as one combined geometry.
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