Contaminants in the Mississippi River
U.S. GEOLOGICAL SURVEY CIRCULAR 1133
Reston, Virginia, 1995
Edited by Robert H. Meade

CONVERSION FACTORS AND ABBREVIATED WATER-QUALITY UNITS



Multiply By To obtain
meter (m) 3.281 foot kilometer (km) 0.6214 mile square kilometer (km2) 0.3861 square mile cubic kilometer (km3) 0.2399 cubic mile centimeter (cm) 0.3937 inch millimeter (mm) 0.03937 inch micrometer (µm) 0.00003937 inch liter (L) 1.057 quart milliliter (mL) 0.03381 fluid ounce kilogram (kg) 2.205 pound, avoirdupois metric ton 2205 pound, avoirdupois cubic meter per second (m3/s) 35.31 cubic foot per second kilogram per square kilometer (kg/km2) 0.008924 pounds per acre
Concentration unit Equals
milligram per gram (mg/g) part per thousand milligram per kilogram (mg/kg) part per million microgram per gram (g/g) part per million nanogram per gram (ng/g) part per billion (109)
Concentration unit Approximately* equals
gram per cubic meter (g/m3) part per million milligram per liter (mg/L) part per million microgram per liter (g/L) part per billion (109) nanogram per liter (ng/L) part per trillion (1012)
*At the concentrations encountered in this study, and considering the detection limits of the analytical methods employed, these units can be considered equal in the context of this report. Degree Celsius (°C) may be converted to degree Fahrenheit (°F) by using the following equation: °F=9/5 (°C)+ 32. Sea level: In this report "sea level" refers to the National Geodetic Vertical Datum of 1929 (NGVD of 1929)--a geodetic datum derived from a general adjustment of the first-order level nets of both the United States and Canada, formerly called Sea Level Datum of 1929.

Continue to ' Acknowledgments ', or return to ' Contents '
Contaminants in the Mississippi River
U.S. GEOLOGICAL SURVEY CIRCULAR 1133
Reston, Virginia, 1995
Edited by Robert H. Meade
http://water.er.usgs.gov/pubs/circ1133/conversion-factors.html

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