100% local — files never leave your device
Convert TopoJSON to WKT
Turn TopoJSON into WKT (text) instantly in your browser. No upload, no account, and no file ever crosses the network.
About TopoJSON
Quantized topology used by D3 and web cartography.
- Export quantizes coordinates and writes one arc per ring; arcs are not deduplicated.
About WKT (text)
One Well-Known Text geometry per line. Ideal for SQL and PostGIS loads.
- Attributes are dropped: WKT carries geometry only.
Step by step
How to convert TopoJSON to WKT
- 01
Drop your .topojson file
Open the converter and drop the TopoJSON file — parsing happens locally in a Web Worker, so nothing is uploaded.
- 02
Choose WKT as the output
Pick WKT, reproject to any of 180+ coordinate systems if needed, trim attributes and preview the geometry on a map.
- 03
Download the .wkt file
Save a single file, or convert a whole batch and download everything as a ZIP. Nothing is stored after the download.
TopoJSON to WKT — questions
Is converting TopoJSON to WKT really private?
Yes. The conversion runs entirely in your browser using a Web Worker — the TopoJSON file is never sent to a server, so it works with confidential data and offline.
Do I need an account to convert TopoJSON to WKT?
No. There is no signup, no email and no install. Open the converter, drop the file and download the result.
What happens to attributes and coordinate systems?
Attributes are dropped: WKT carries geometry only. You can also reproject between 180+ coordinate reference systems or add a custom proj4 definition before writing.
Need the other direction? Convert WKT to TopoJSON