EPSG:2227 · Americas

California State Plane Zone 3 (US ft) to KML & KMZ

Convert California State Plane Zone 3 (US ft) eastings and northings to latitude and longitude, and save them as a Google Earth KML or KMZ. Try a single point here, or convert a whole spreadsheet in the web app.

  • Converter already set to EPSG:2227
  • Datum shift to WGS 84 applied automatically
  • Whole sheets with photos and boundaries in the web or Windows app
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About California State Plane Zone 3 (US ft)

California State Plane Coordinate System zone 3 is a Lambert conformal conic grid on NAD83, in US survey feet. NAD83 is treated as WGS 84 here, which is good to about a metre or two.

Where it's used: The San Francisco Bay Area (San Francisco, Oakland, San José) and the central coast and Sierra counties of zone 3.

Convert a whole spreadsheet

  1. Open the web app or the Windows app, and paste your rows from Excel or open a CSV file.
  2. Under Coordinate system, search for “2227” and pick NAD83 / California zone 3 (ftUS).
  3. Check one point you know on the map, then press Save KML or Save KMZ (with photos) and open it in Google Earth.

This grid is in US survey feet. Enter coordinates in those units, not metres.

Before you rely on it

Check the units: the same zone also exists in metres (EPSG 26943). Feet entered as metres put points hundreds of kilometres away. Always check one known control point before sending a file out.