API for Universal Transverse Mercator (UTM) Service

Query Parameter

Description

northing*

Northing in meters.

easting*

Easting in meters.

utmZone*

A 2-digit UTM zone to be used for conversion

hemi **

Hemisphere: N or S; defaults to N, if the parameter is not used

inDatum*

Datum of input coordinate;to be chosen from Regional Datums defined above; not required for coordinates outside the regions defined above

outDatum*

Datum of output coordinate;to be chosen from Regional Datums defined above; not required for coordinates outside the regions defined above

a **

Equatorial radius in meters; needed for an international coordinate outside the regions defined above

invf **

Inverse of flattening; needed for an international coordinate outside the regions defined above

spcZone*

A 4-digit SPC zone to be used for SPC conversion, where applicable; SPC zone is automatically determined based on a given UTM coordinate; you may optionally override this by specifying your own 4-digit SPC zone

eht **

Ellipsoid height in meters; defaults to undefined if the parameter is not used. Combined factors and XYZ are not returned, if no height is specified

inVertDatum **

Geopotential Datum of input orthometric height; to be chosen from Regional Geopotential Datums defined above

outVertDatum **

Geopotential Datum of output orthometric height; to be chosen from Regional Geopotential Datums defined above

orthoHt **

Orthometric height chosen for transformation

* Required Field
** Optional Field, to override defaults

Examples:

https://geodesy.noaa.gov/api/ncat/utm?inDatum=NAD83(2011)&outDatum=NAD83(NSRS2007)&utmZone=15
&northing=4138641.144&easting=547883.655

https://geodesy.noaa.gov/api/ncat/utm?inDatum=NAD83(2011)&outDatum=NAD83(NSRS2007)&utmZone=15
&northing=4138641.144&easting=547883.655&spcZone=2401&eht=100.0

https://geodesy.noaa.gov/api/ncat/utm?utmZone=56&northing=6250935.338&easting=334368.032&hemi=S
&a=6378160.0&invf=298.25