8/13/2009: No longer free; there’s a subscription fee from which a small charge is deducted for every use. A free grid link is still available here for MGRS and UTM.
Earthpoint has a new beta Google Earth function – grid overlays for multiple coordinate systems:
- Deg – Decimal degrees
- DegSec – Degrees, Decimal seconds
- DegSecMin – Degrees, Seconds, Decimal minutes
- Georef – World Geographic Reference System
- UTM/UPS – Universal Transverse Mercator / Universal Polar Stereographic
- MGRS – Military Grid Reference System
Click the button for the desired grid KML file, and open it in Google Earth (UTM here):
As you zoom in, the grids become finer; you may have to wait a bit for the network link to catch up:
Roll your mouse over one of the “balls” defining the grid, and get a pop-up with the coordinates (and UTM zone here):
The crosshair marks the center of the display, the location for which Google Earth shows the coordinates and elevation in the bottom toolbar.