• NAD27 to NAD83(HARN) (36)

  EPSG:8553
  Area of use: United States (USA) - Illinois.
  

• NAD27 to WGS 84 (45)

  EPSG:8598
  Area of use: United States (USA) - Illinois.
  

• NGVD29 height (ftUS) to NAVD88 height (2)

  EPSG:7974
  Area of use: United States (USA)
  

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Type of results

• Coordinate reference systems (1774)

•    Projected (1732)
•    Geodetic (11)
•    Geodetic 3D (9)
•    Geocentric (8)
•    Vertical (7)
•    Compound (7)

• Operation (101)

•    Transformation (46)
•    Compound (4)
•    Conversion (51)

• Datum (9)

•    Vertical (2)
•    Geodetic (7)

• Area (65)