Bermuda 1957 / UTM zone 20N to KML & KMZ

Good to know

• Pick the UTM zone by longitude. Points outside the zone's area of use are flagged after conversion.
• Datum: Published 7-parameter shift (typically 1–2 m).

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 “3769” and pick Bermuda 1957 / UTM zone 20N.
3. Check one point you know on the map, then press Save KML or Save KMZ and open it in Google Earth.

Common mistakes with Bermuda 1957 / UTM zone 20N

• Feet entered as metres. Bermuda 1957 / UTM zone 20N is in metres. Coordinates copied from a drawing in feet must be converted first, or every point moves outwards from the grid's origin.
• Forgetting the datum. Bermuda 1957 / UTM zone 20N is not on WGS 84: published 7-parameter shift (typically 1–2 m). Picking a WGS 84 grid with the same projection instead leaves the points off by that amount.
• Points outside the grid's area. Bermuda 1957 / UTM zone 20N is meant for Bermuda - onshore. Points well outside that area convert with growing error; the converter flags them so you can choose the right grid.
• A local site grid. If every point is off by the same distance and direction, the drawing may be on a local site grid. Calibrate on three or more known control points instead.

New to this? Read how to convert easting and northing to latitude and longitude.