How are Point placemarks written to CSV?

As lat and lon columns, alongside the placemark’s name and other properties.

What about Polygon/LineString placemarks?

They’re written as WKT text in a wkt column instead, since they can’t be represented as one lat/lon pair.

Convert a KML file (e.g. from Google Earth) to a CSV spreadsheet, in your browser.

Input (KML)

Output (CSV)

KML/GPX parsing only runs in the browser.

Runs entirely in your browser - nothing is sent to a server.

How are Point placemarks written to CSV?: As lat and lon columns, alongside the placemark’s name and other properties.
What about Polygon/LineString placemarks?: They’re written as WKT text in a wkt column instead, since they can’t be represented as one lat/lon pair.