EPSG systems

EPSG:2256 NAD83 / Montana (ft)

Projected system (Lambert Conic Conformal (2SP)) in use: USA - Montana. The full definition below, and conversion in one click.

System record
CodeEPSG:2256
NameNAD83 / Montana (ft)
TypeProjected system — Lambert Conic Conformal (2SP)
Area of use USA - Montana
United States (USA) - Montana - counties of Beaverhead; Big Horn; Blaine; Broadwater; Carbon; Carter; Cascade; Chouteau; Custer; Daniels; Dawson; Deer Lodge; Fallon; Fergus; Flathead; Gallatin; Garfield; Glacier; Golden Valley; Granite; Hill; Jefferson; Judith Basin; Lake; Lewis and Clark; Liberty; Lincoln; Madison; McCone; Meagher; Mineral; Missoula; Musselshell; Park; Petroleum; Phillips; Pondera; Powder River; Powell; Prairie; Ravalli; Richland; Roosevelt; Rosebud; Sanders; Sheridan; Silver Bow; Stillwater; Sweet Grass; Teton; Toole; Treasure; Valley; Wheatland; Wibaux; Yellowstone.
Bounds W -116,07° · S 44,35° · E -104,04° · N 49,01°
Countries United States
DatumNorth American Datum 1983
Ellipsoid GRS 1980 a = 6378137 m · 1/f = 298.257222101
Base geographic system EPSG:4269 — NAD83
Unit foot (X east, Y north)
Transformation to WGS 84 NAD83 to WGS 84 (1) (EPSG:1188) — accuracy 4 m
ScopeEngineering survey, topographic mapping.

Projection parameters

ParameterValueUnit
Latitude of false origin44.25degree
Longitude of false origin-109.5degree
Latitude of 1st standard parallel49degree
Latitude of 2nd standard parallel45degree
Easting at false origin1968503.937foot
Northing at false origin0foot

proj4 definition

+proj=lcc +lat_0=44.25 +lon_0=-109.5 +lat_1=49 +lat_2=45 +x_0=599999.9999976 +y_0=0 +a=6378137 +rf=298.257222101 +units=ft +towgs84=0,0,0 +no_defs

Paste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:2256.

WKT (ESRI format, the .prj content)

PROJCS["NAD_1983_StatePlane_Montana_FIPS_2500_Feet_Intl",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",1968503.937],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-109.5],PARAMETER["Standard_Parallel_1",49.0],PARAMETER["Standard_Parallel_2",45.0],PARAMETER["Latitude_Of_Origin",44.25],UNIT["foot",0.3048]]

All systems — United States

Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.