Metric System Conversion Factors 1

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1 Fact Sheet ENH-94 November 1993 Metric System Conversion Factors 1 L. B. McCarty and Danny Colvin 2 AREA EQUIVALENTS 1 Cubic Yard (yd 3 ) 1 Acre 1 Hectare (ha) 1 Acre-inch 1 Square Foot (ft 2 ) 1 Are (a) 1 Square Mile (mi 2 ) 1 Cubic Foot (ft 3 ) 1. This document is Fact Sheet ENH-94, a series of the Environmental Horticulture Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Publication date: November L. B. McCarty, associate professor and extenison turf specialist, Environmental Horticulture Department; Danny Colvin, associate professor, Agronomy Department; Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida, Gainesville FL The Institute of Food and Agricultural Sciences is an equal opportunity/affirmative action employer authorized to provide research, educational information and other services only to individuals and institutions that function without regard to race, color, sex, age, handicap, or national origin. For information on obtaining other extension publications, contact your county Cooperative Extension Service office. Florida Cooperative Extension Service / Institute of Food and Agricultural Sciences / University of Florida / John T. Woeste, Dean

2 Metric System Conversion Factors Page 2 1 Square Rod (rd 2 ) 1 Inch (in) 1 Square Yard (yd 2 ) 1 Kilometer (km) FLOW EQUIVALENTS 1 Gallon Per Minute (GPM, gal/min) 1 Meter (m) 1 Cubic Foot Per Minute (CFM, ft 3 /min) 1 Micrometer (micron, µm) LENGTH EQUIVALENTS 1 Centimeter (cm) 1 Rod (rd) 1 Chain, Surveyor s (ch) 1 Statute Mile (mi) 1 Foot (ft) 1 Yard (yd)

3 Metric System Conversion Factors Page 3 LIQUID EQUIVALENTS 1 Liquid Quart, US (qt) 1 Acre-inch of Water 1 Cubic Foot of Water (ft 3 ) 1 Liter (L) 1 Cup, measuring (c) 1 Milliliter (ml) 1 Fluid Ounce, US (fl. oz.) 1 Tablespoon (tbsp) 1 Gallon, US (gal) 1 Teaspoon (tsp) MIXTURE PROPORTIONS 1 Liquid Pint, US (pt) PRESSURE EQUIVALENTS

4 Metric System Conversion Factors Page 4 TEMPERATURE EQUIVALENTS 1 Gram (g) Convert degrees Centigrade ( C) to degrees Fahrenheit ( F) 1 Milligram (mg) Convert degrees Fahrenheit ( F) to degrees Centigrade ( C) 1 Microgram (µg) WEIGHT EQUIVALENTS 1 Nanogram (ng) 1 Ton, US, short or net 1 Picogram (pg) 1 Metric Ton 1 Part Per Billion (ppb) 1 Pound, US (lb, #) 1 Part Per Million (ppm) 1 Ounce, weight (oz.) 1 Part Per Trillion (ppt) 1 Kilogram (kg) 1 Percent (%)

5 Metric System Conversion Factors Page 5 MIXTURE RATIOS TABLES WITH CONVERSION INFORMATION Table 1. Metric Prefix Definitions, Multiples and Equivalents.* Prefix Multiple Equivalent SLOPES tera trillionfold giga 10 9 billionfold mega 10 6 millionfold kilo 10 3 thousandfold hecto 10 2 hundredfold deca 10 1 tenfold Prefix Submultiple Equivalent deci 10-1 tenth centi 10-2 hundredth milli 10-3 thousandth micro 10-6 millionth nano 10-9 billionth pico trillionth * basic metric unit = 1 Table 2. Conversion Factors. TO CONVERT MULTIPLY BY TO OBTAIN ACRES 43,560 SQUARE FEET (FT 2 ) ACRES SQUARE KILOMETER (KM 2 ) ACRES 4050 SQUARE METER (M 2 ) ACRES 4840 SQUARE YARDS (YD 2 ) ACRE-FEET 324,851 SQUARE FEET (FT 2 ) ACRE-FEET 43,560 CUBIC FEET (FT 3 ) ACRE-FEET CUBIC METERS (M 3 ) BAR 14.5 POUNDS PER SQUARE INCH (PSI, LB/SQ.IN., #/IN 2 ) BAR GRAMS PER CUBIC CENTIMETER (G/CM 3 ) BAR INCHES OF MERCURY AT ZERO DEGREES CENTIGRADE (IN 0 C) CENTIMETERS (CM) FEET (FT) CENTIMETERS INCHES (IN) CENTIMETERS YARDS (YD) CENTIMETERS 0.01 METERS (M) CENTIMETERS 10 MILLIMETERS (MM) CENTIMETERS PER SECOND (CM/SEC) FEET PER MINUTE (FT/MIN) CENTIMETERS PER SECOND (CM/SEC) MILES PER HOUR (MPH) CUBIC CENTIMETERS (CM 3 ) CUBIC INCHES (IN 3 ) CUBIC FEET (FT 3 ) CUBIC METER (M 3 ) CUBIC FEET GALLONS (GAL) CUBIC FEET 1728 CUBIC INCHES (IN 3 ) CUP 8 FLUID OUNCES (FL OZ) FEET (FT) CENTIMETERS (CM) FEET METERS (M) FOOT CANDLE LUX GALLONS (GAL) LITERS (L)

6 Metric System Conversion Factors Page 6 TO CONVERT MULTIPLY BY TO OBTAIN GALLONS 3785 MILLILITERS (ML) GALLONS 128 OUNCES, LIQUID (FL OZ) GAL/ACRE (GPA) LITERS/HECTARE (L/HA) GAL/1000 FT LITERS/100 SQUARE METERS (L/100M 3 ) GAL/MINUTE (GPM) X 10-3 CUBIC FEET/SECOND (FT 3 /SEC) GRAMS (G) POUNDS, US (LBS, #) GRAMS OUNCES, US WEIGHT (OZ) GRAMS PER LITER (G/L) 1000 PPM GRAMS PER LITER (G/L) 10 PERCENT (%) GRAMS/SQUARE METER (G/M 2 ) POUNDS PER SQUARE FEET (LB/SQ FT, #/FT 2 ) GRAMS PER CUBIC METER (G/CM 3 ) POUNDS PER CUBIC INCH (LB/IN 3 ) GRAMS PER CUBIC METER (G/CM 3 ) POUNDS PER CUBIC FOOT (LB/FT 3 ) HECTARES (HA) ACRES INCHES CENTIMETERS (CM) INCHES METERS (M) INCHES MILLIMETERS (MM) SQUARE INCHES (IN 2 ) SQUARE CENTIMETERS (CM 2 ) CUBIC INCHES (IN 3 ) CUBIC CENTIMETERS (CM 3 ) KILOGRAMS (KG) POUNDS, US (LB, #) KILOGRAMS/HECTARE (KG/HA) POUNDS/ACRE KILOGRAMS/HECTARE (KG/HA) POUNDS PER 1000 SQUARE FEET (LB/1000 FT 2 ) KILOGRAM PER LITER (KG/L) POUNDS PER GALLON (LB/GAL) KILOMETERS (KM) 100,000 CENTIMETERS (CM) KILOMETERS 3281 FEET (FT) KILOMETERS 1000 METERS (M) KILOMETERS MILES (MI) KILOMETERS 1094 YARDS (YD) KILOMETERS PER HOUR (KM/H) MILES PER HOUR (MPH) KILOMETERS PER HOUR (KM/H) FEET PER MINUTE (FT/MIN) LITERS (L) GALLONS (GAL) LITERS PINTS (PT) LITERS QUARTS (QT) LITERS/ACRE GALLONS/ACRE LITERS/100 SQUARE METERS (L/100 M 2 ) GALLONS/1000 SQUARE FEET (GAL/FT 2 ) LITERS/HECTARE (L/HA) GALLONS PER ACRE METERS (M) FEET (FT) METERS INCHES (IN) METERS YARDS (YD) METERS 100 CENTIMETERS (CM) METERS KILOMETERS (KM) METERS 1000 MILLIMETERS (MM) METERS PER SECOND (M/SEC) MILES PER HOUR (MPH) SQUARE METERS (M 2 ) SQUARE FEET (FT 2 ) CUBIC METERS (M 3 ) CUBIC FEET (FT 3 ) CUBIC METERS (M 3 ) CUBIC YARDS (YD 3 ) MILES (MI) 160,900 CENTIMETERS (CM) MILES 5280 FEET (FT) MILES KILOMETERS (KM) MILES 1760 YARDS (YD) MILES/HOUR (MPH) FEET/SECOND (FT/SEC) MILES/HOUR 88 FEET/MINUTE (FT/MIN) MILES/HOUR 1.61 KILOMETERS/HOUR (KM/HR) MILES/HOUR METER/SECOND (M/SEC) MILLILITERS (ML) OUNCES, FLUID (FL OZ) MILLIMETERS (MM) INCHES (IN) OUNCES, FLUID (FL. OZ.) LITERS (L) OUNCES, FLUID (FL. OZ.) MILLILITERS (MM) OUNCES, US, WEIGHT (OZ.) GRAMS (GM)

7 Metric System Conversion Factors Page 7 TO CONVERT MULTIPLY BY TO OBTAIN PARTS PER MILLION (PPM) POUNDS OF ACTIVE INGREDIENT (LB AI)/ACRE FOOT OF WATER PPM GRAMS/LITER (GM/L) PPM 8.34 LB/MILLION GAL PPM 1 MILLIGRAMS/KILOGRAMS (MG/KG) PPM OUNCES/100 GAL OF WATER PPM GALLONS/ACRE-FOOT OF WATER PPM POUNDS/MILLION GAL OF WATER PERCENT (%) 10 GRAMS/KILOGRAMS (G/KG) PINT, LIQUID (PT.) LITER (L) PINT PER ACRE (PT/A) LITER PER HECTARE (L/HA) POUNDS, US (LB, #) KILOGRAMS (KM) POUNDS GRAMS (G) POUNDS/ACRE 1.12 KILOGRAMS/HECTARE (KM/HA) POUNDS/ACRE (LB/A) POUNDS PER 1000 SQUARE FEET (LB/1000 FT 2 ) POUNDS/SQUARE FEET (LB/FT 2 ) 4883 GRAMS/SQ.METER (GM/M 2 ) POUNDS/GALLON 0.12 KILOGRAM/LITER (KM/L) PSI; POUNDS PER SQUARE INCH 6.9 KILOPASCALS (LBS/IN 2 ) PSI BAR PSI ATMOSPHERE (ATM) QUARTS, LIQUID (QT) LITERS (L) QUARTS PER ACRE (QT/A) LITERS PER HECTARE (L/HA) SQUARE CENTIMETERS (CM 2 ) SQUARE FEET (FT 2 ) SQUARE CENTIMETERS SQUARE INCHES (IN 2 ) SQUARE FEET (FT 2 ) 929 SQUARE CENTIMETERS (CM 2 ) SQUARE FEET SQUARE METERS (M 2 ) SQUARE FEET X 10-6 HECTARES (HA) SQUARE INCH SQUARE CENTIMETERS (CM 2 ) TON (2000 LBS) 907 KILOGRAMS (KG) YARDS (YD) CENTIMETERS (CM) YARDS METERS (M) YARDS MILLIMETERS (MM) CUBIC YARDS (YD 3 ) CUBIC METERS (M 3 ) PHOSPHORIC ACID (P 2 O 5 ) PHOSPHORUS (P) POTASSIUM OXIDE (K 2 O) POTASSIUM (K) CALCIUM OXIDE (CaO) CALCIUM (Ca) MAGNESIUM OXIDE (MgO) MAGNESIUM (Mg)

8 Metric System Conversion Factors Page 8 Table 3. Decimal and millimeter length equivalents. Fraction (inch) Decimals (inch) Millimeters / / / ¾ / / / ½ / / / / / ¼ / / / / / / / / / / / / / / /

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