NADCON computations - HPGN Option
Use NADCON (North American Datum Conversion) to convert latitude and longitude from NAD 83(86) to one or more HPGN systems or from a HPGN to NAD 83(86)
Computations may be performed for a specific geographical location or for a
file of input points.
Select direction of conversion:
NAD 83(86) to HPGN
HPGN to NAD 83 (86)
Choose a single set of HPGN grids:
Alabama
American Samoa (Tutuila and Aunuu Islands)
American Samoa (Ofu, Olesega, and Ta'u Islands)
Arkansas
Arizona
California (Above 38 degrees latitude)
California (Below 38 degrees latitude)
Colorado
Georgia
Florida
Hawaii
Idaho-Montana (East of 113 degrees longitude)
Idaho-Montana (West of 113 degrees longitude)
Iowa
Illinois
Indiana
Kentucky
Kansas
Louisiana
Maryland - Delaware
Maine
Michigan
Minnesota
Mississippi
Missouri
Nebraska
New England (CT,MA,NH,RI,VT)
Nevada
New Jersey
New Mexico
New York
North Carolina
North Dakota
Ohio
Oklahoma
Pennsylvania
Puerto Rico-Virgin Is
South Carolina
South Dakota
Tennessee
Texas (East of 100 degrees longitude)
Texas (West of 100 degrees longitude)
Utah
Virginia
Washington-Oregon
West Virginia
Wisconsin
Wyoming
The three formats below may be used for entering latitudes and longitudes.
West longitudes and north latitudes are positive.
Degrees, minutes and seconds may be separated by spaces or com mas.
Degrees, Minutes, and Seconds
Latitude Example:
35 35 19.0221
Longitude Example:
098 23 14.2334
Degrees and Minutes with decimal
Example:
35 35.23456
Degrees with decimal
Example:
35.67890
Enter Latitude:
Enter Longitude:
Enter station name (optional):