• NAD83 to NAD83(HARN) (17)

  EPSG:1490
  Area of use: United States (USA) - Connecticut; Massachusetts; New Hampshire; Rhode Island; Vermont.
  

• NAD83 to WGS 84 (29)

  EPSG:1725
  Area of use: United States (USA) - Connecticut; Massachusetts; New Hampshire; Rhode Island; Vermont.
  

• NGVD29 height (m) to NAVD88 height (3)

  EPSG:7971
  Area of use: United States (USA)
  

• NAD83(HARN) to NAVD88 height (4)

  EPSG:9163
  Area of use: United States (USA)
  

• NAD27 to WGS 84 (5)

  EPSG:1174
  Area of use: United States (USA)
  

• NAD27 to WGS 84 (4)

  EPSG:1173
  Area of use: United States (USA)
  

• NAD83(2011) to NAVD88 height (1)

  EPSG:6326
  Area of use: United States (USA)
  

• NAD83(FBN) to NAVD88 height (1)

  EPSG:9168
  Area of use: United States (USA)
  

• NAD83(NSRS2007) to NAVD88 height (1)

  EPSG:9173
  Area of use: United States (USA)
  

• NAD83(2011) to NAVD88 height (3)

  EPSG:9229
  Area of use: United States (USA)
  

• Search deprecated (7)

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Type of results

• Coordinate reference systems (1761)

•    Projected (1710)
•    Geodetic (12)
•    Geodetic 3D (13)
•    Geocentric (12)
•    Vertical (7)
•    Compound (7)

• Operation (68)

•    Transformation (45)
•    Compound (4)
•    Conversion (19)

• Datum (10)

•    Vertical (2)
•    Geodetic (8)

• Area (33)