Map coordinates to GPS

[Frank Perkins]

I have a map of an area I plan to hike. On the map are "coordinates"? of 4660000N on the right hand side [latitude?] and up top 624000E for longitude?

I then pull up Google Earth and I'm trying to map the location I see in the map to Google Earth. I thought the best way would be to convert the coordinates to GPS and just enter them into the Google Earth search. My question is I'm not sure how the map measurements relate back to a GPS point. Can someone explain and point me to the "idiots guide" to doing this?

Thanks

[Mike W]

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[Frank Perkins]

Sorry if I wasn't clear but I don't actually own a GPS. What I'm trying to do is find coordinates on my physical paper map in Google Earth.

[Mike W]

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[Neil Bender]

Your map appears to have UTM coordinates listed. Those numbers are meters, so if your map has a kilometer scale you can measure your own 1 km gridlines using that scale to estimate coordinates of points on the map. UTM also has zones associated with it, which you will also need. The other thing that effects accuracy is reference datums, usually either NAD27, or WGS84 or such. These datums have different reference points. If you don't know which one your map or Google uses you could be off by something like 30 meters.

These pages might help:

http://www.maptools.com/UsingUTM/

http://www.uwgb.edu/DutchS/UsefulData/UTMFormulas.HTM

http://en.wikipedia.org/wiki/Universal_Transverse_Mercator_coordinate_system

[Frank Perkins]

Thanks for the help everyone. Knowing that the numbers on the map refer to UTM sure does it make it easier ;-) Now I know what the UTM overlays in the BPL store are used for!

In Google Earth's preferences, you can change the lat/long to UTM. Now I need an overlay to really zoom and get an accurate point.

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