WGS84/NAD27 converter
Most on-line map services and GPS's use the WGS84 datum, but the USGS topo maps are published in the NAD27 datum. The 1 kilometer UTM grid on the 7.5' quads is useful for off-trail adventures. Use a yardstick to draw in the grid lines (see example), then set your GPS readouts to NAD27 and UTM.

WGS84 NAD27
36.606817-84.968633 36.606734-84.968701
36° 36.4090'84° 58.1180' 36° 36.4040'84° 58.1220'
36° 36' 24.54"84° 58' 7.08" 36° 36' 24.24"84° 58' 7.32"
681681E 4053178N 16 681679E 4052966N 16

    show maps for this location (WGS84) Google topo

 

With the form below you can convert between lat/lon and UTM and between the WGS84 and NAD27 datums. Latitude/longitude can be represented as 36.12345, or 36 44.333, or 36 22 14.5 and degree, minute, seconds symbols will be ignored.

Latitude: Longitude:
     

 

  UTM Easting: Northing: Zone:
     

 

  NABSQNO: WGS84 UTM (Z-E-N), e.g. 16S-598278-3890594
     

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