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Scientific Investigations Report 2008–5169

U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2008–5169

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Conversion Factors and Datums

Conversion Factors

Multiply By To obtain
centimeter (cm) 0.3937 inch (in.)
centimeter of water (cm-water) 0.01419 pound per square inch (lb/in2)
centimeter per second (cm/s) 0.03281 foot per second (ft/s)
centimeter per day (cm/d) 0.03281 foot per day (ft/d)
cubic centimeter (cm3) 0.06102 cubic inch (in3)
gram (g) 0.00220 pounds (lb)
gram per centimeter (g/cm) 0.00560 pound per inch (lb/in)
gram per cubic centimeter (g/cm3) 0.03613 pounds per cubic inch (lb/in3)
kilometer (km) 0.6214 mile (mi)
meter (m) 3.281 foot (ft)
millimeter (mm) 3.937 inch (in.)
square kilometer (km2) 247.1 acre
square kilometer (km2) 0.3861 square mile (mi2)

Datums

Vertical coordinate information is referenced to the National Geodetic Vertical Datum of 1929 (NGVD 29).

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83).

Altitude, as used in this report, refers to distance above the vertical datum.

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