Metric System Conversion Factors

Metric System Conversion Factors

Area Equivalents

1 acre = 43,560 ft2 = 4840 yd2 = 0.4047 hectares = 160 rods2 = 4047 m2 = 0.0016 sq. mile

1 acre-inch = 102.8 m3 = 27,154 gal = 3630 ft3

1 hectare (ha) = 10,000 m2 = 100 are = 2.471 acres = 107,639 ft2

1 square meter (m2) = 10,000 square centimeter (cm2)

1 cubic foot (ft3) = 1728 in3 = 0.037 yd3 = 0.02832 m3 = 28,320 cm3

1 cubic yard (yd3) = 27 ft3 = 0.765 m3

1 square foot (ft2) = 144 in2 = 929.03 cm2 = 0.09290 m2

1 square yard (yd2) = 9 ft2 = 0.836 m2

Liquid Equivalents

1 ft3 of water = 7.5 gal = 62.4 lbs. = 28.3 liters

1 acre-inch of water = 27,154 gal = 3630 ft3

1 liter (l) = 2.113 pts. = 1000 ml = 1.057 qts. = 33.8 fl.oz. = 0.26 gal = 0.0001 m2 = 1,000 cm3

1 US gallon=4 qt.=8 pt. = 16 cups = 128 fl.oz. = 8.337 lbs of water = 3.785 L = 3785 ml = 231 in3 = 256 tbsp. = 0.1337 ft3

1 quart = 0.9463 liters = 2 pt. = 32 fl. oz. = 4 cups = 64 tablespoons (tbsp.)=57.75 in3 = 0.25 gal = 946.4 ml

1 pint = 16 fl. oz. = 2 cups = 473.2 ml = 32 level tablespoons = 0.125 gal = 0.5 qt 1 tablespoon = 14.8 ml = 3 teaspoons (tsp.) = 0.5 fl.oz.

1 cup = 8 fl. oz. = ? pt. = 16 tablespoons = 236.6 ml 1 milliliter (ml) = 1 cm3 = 0.034 fl.oz. = 0.002 pts

1 US fluid ounce = 29.57 ml = 2 tablespoons = 6 tsp. = 0.03125 qt

1 teaspoon = 4.93 ml = 0.1667 fl. oz. = 80 drops

Temperature Equivalents degrees Centigrade = (?F-32)x5/9 degrees Fahrenheit = (?Cx9/5)+32

Pressure Equivalents 1 lb per square inch (PSI) = 6.9 kilopascal (kPa)

1 PSI = 2.31 feet head of water 1 atm = 760 mmHg = 1.013 x 105 Pa = 1.013 bar = 14.70 psi 1 mmHg = 133.32 Pa = 0.133 kPa = 133,333 mPa 1Pa = 10-3 kPa = 10-6 mPa 1mPa = 103 kPa = 106 Pa 1kPa = 1cb = 0.001MPa =10 cm H20 = 10 mbar = 0.01 bar = 1J/kg = 0.0099 atm. = 0.145 psi

Length Equivalents centimeter (cm) = 0.3937 inch = 0.01 m = 0.03281 ft. kilometer = 0.621 statute mile = 1000 meters = 100,000 cm = 3281 ft = 39,370 in. inch = 2.54 cm = 25.4 mm = 0.0254 m = 0.08333 ft. yard = 0.9144 meters = 3 feet = 36 inches = 91.44 cm

meter (m) = 3.28 feet = 39.4 inches = 100 cm = 1.094 yds = 1000 mm

foot = 0.3048 meters = 30.48 cm = 12 inches statute mile = 1760 yards = 5280 feet = 1.61 kilometers = 1609 meters

Mixture Ratios 1 mg/g = 1000 ppm 1 fl.oz./100 gal = 75 ppm 1 pt/100 gal = 1 teaspoons/1gal

1 fl.oz./gal = 7490 ppm 1 qt/100 gal = 2 tablespoons/1.0 gal

Flow 1 gpm = 0.134 ft3/minute = 0.06308 liter/sec 1 ft3/min. (cfm) = 449 gal/hr. (gph) = 7.481 gal/min

133

Weight Equivalents 1 ton (US) = 2000 lb = 0.907 metric tons = 907.2 kg

1 metric ton = 106 g = 1000 kg = 2205 lb

1 lb = 16 oz = 453.6 grams (g) = 0.4536 kg

1 oz (weight) = 28.35 g = 0.0625 lb

1 gram = 1000 mg = 0.0353 oz = 0.001 kg = 0.002205 lb

milligrams (mg) = 0.001 grams

1 kilogram (kg) = 1000 grams = 35.3 oz = 2.205 lbs

microgram (? g) = 10-6 grams = 0.001 mg

nanogram (ng) = 10-9 grams = 0.001 micrograms (:g)

picogram = 10-12 grams

1 ppm = 0.0001% = 1 mg/kg = 1 mg/L = 1 ? g/g = 1?l/l = 1?g/mL = 0.379 g in 100 gal water = 8.34 x 10-6 lb/gal = 0.013 fl oz in 100 gal

10 ppm = 0.001% = 10 mg/L

100 ppm = 0.01% = 100 mg/L 1000 ppm = 1 mg/g = 0.1% = 1000 mg/L

1 ppb = 1 ?g/kg = 1 ?g/L = 1 ng/mL = 1 ng/1,000,000,000

1 ppt = 1 picogram/g

1% = 10,000 ppm = 10g/L = 1g/100ml = 10g/kg = 1.33 oz by weight/gal water = 8.34 lbs/100 gal water

1% (v/v) = 1.28 fl.oz./gal = 1 gal/100 gal

134

Approximate Weight of Dry Soil

Type

g/cm3

sand

1.6

loam

1.3 to 1.55

clay or silt

1.0 to 1.30

muck

0.65

peat (compact)

0.325

Sand weights (tons):

=

yd3

x 1.3

Gravel weights (tons): =

ft3

x 110

-0.5- to 1-inch diameter gravel

= 2,700 lbs/ton

-0.25- to 0.375-inch diameter gravel = 3,000 lbs/ton

lbs/ft3 100 (or 2700 lbs/yd3)

80-95 65-80

40 20

lbs/acre (6 inches deep)

2,143,000 1,714,000 1,286,000 860,000 430,000

Approximate Organic Materials for six inch depth per 1,000 sq.ft. (variance in volume of organic materials used may occur).

Desired Organic Materialo Volume in Mix (%)

Approximate thickness applied to soil surfaces (inches)

Organic Material Needed (cu. yd.) per 1,000 sq.ft.

5

0.33

1.0

10

0.67

2.0

15

1.00

3.0

20

1.33

4.0

25

1.67

5.0

30

2.00

6.0

Example: If 10% organic materials is to be incorporated into the top 6-inches of a 1,000 sq.ft. area. From the chart below: the organic material is applied to a depth of 0.67 inches and 2.0 cu. yds. will be needed.

Peat Moss Coverage

Depth (inches)

0.25 0.50 1.00 2.00 3.00 4.00 6.00

Coverage (sq.ft.)

5.6 cu. ft. Bale (compressed) when loosened covers

4.0 cu.ft Bale (compressed) when loosened covers

480

346

240

173

120

86

60

43

40

29

30

22

20

14

135

Conversions for determining turfgrass irrigation needs

1 acre-inch

=

27,154 gal

= 43,560 cu.in.

= 3,630 cu.ft.

1 inch/1000 sq.ft.

=

620 gal

= 83 cu.ft.

1 gallon

=

0.134 cu.ft.

= 8.34 lbs

1 million gallon

=

3.07 acre-feet

7? gallons

=

1 cu.ft.

= 231 cu.in.

1 acre-foot

=

325,851 gal

= 43,560 cu.ft.

1 pound of water

=

0.1199 gal

Precipitation rate (in/hr)

=

gpm x 96.3

area (ft2)

Energy

1 calorie (cal)

=

Water and Soil Calculations

Joule (J)

=

1 mmhos/cm = 1,000?mhos/cm = 1 dS/m = 1mS/cm

1 kcal

=

1 meq/L = 1 mmol/L = 1mol/m3

1 meq/100g = 1mmol/100g = cmol/kg

4.184 Joule 1 kg m2 s-2 4.184 kJ

136

To Convert Acres (a) Acres Acres Acres Acres Acre-feet Acre-feet Acre-feet Acre-inch Bar Bar Bar Bar Bar Bar Bushels (dry) Bushels Calorie (cal) Centimeters (cm) cm cm cm cm cm/sec cm/sec cm2 (square centimeters) cm2 cm3 (cubic centimeters) cm3 Cup Cup Feet (ft)

Metric Conversion Factors

Multiply by 0.4047 43,560 0.00405 4047 4840 325,851 43560 1233.5 102.8 14.5 1019.7 29.53 75 0.001 100 0.03524 1.245 4.184 0.03281 0.3937 0.1094 0.01 10 1.9685

0.0223694 0.001076 0.1550 0.0610237 0.0338

8 236.6 30.48

To Obtain Hectare (ha) Sq. feet (ft2) Sq. kilometer (km2) Sq. meter (m2) Sq. yards (yd2) Sq. feet (ft2) Cu. Feet (ft3)

m3 m3 lb/in2 g/cm3 inches Hg @ 0oC cm Hg @ 0oC J/kg kPa m2 ft3 Joules (J) Feet (ft) Inches (in) Yards (yd) Meters (m) Millimeters (mm) ft/min MPH ft2 in2 in3 fl oz fl oz cm3 cm

137

To Convert ft ft ft2 (square feet) ft2 ft2 ft3 (cubic feet) ft3 ft3 ft3 ft3 ft3/1,000 ft2 Feet per minute Feet head of water Foot candle Gallons (gal) Gal Gal Gal Gal/acre (gpa) gpa gpa Gal/1,000 ft2 Gal/minute Gal/min Gal/min Grams (g) Gram g/cm3 g/cm3 g/ft2 g/ha g/ha

Metric Conversion Factors

Multiply by 0.3048 305 929 0.0929

9.294 x 10-6 0.0283 7.4805 1728 0.037 28.32 0.030463 0.01136 0.433 10.764 3.785 3785 128 0.13368 9.354 0.09354 2.938 4.0746

2.228 x 10-3 0.06309 0.227125 0.002205 0.035274 0.036127 62.428 96 0.000893 0.014275

To Obtain m mm cm2 m2

Hectares (ha) m3

Gallons Cubic inches (in3) Cubic yards (yd3)

Liters (L) m3/100 m2

MPH PSI Lux Liters Milliliters Ounces (liquid) ft3 Liters/hectare L/100 m2 oz/1,000 ft2 (liquid) L/100 m2 Cubic feet/second L/sec m3/hr Pounds oz lb/in3 lb/ft3 lb/acre lbs/acre oz/acre

138

To Convert g/kg g/liter g/liter g/liter g/liter g/m2 g/m2 Hectares (ha) Ha Ha horsepower (hp) (electrical or mechanical) hp hp Inches Inches Inches Inches of mercury in/ft in2 in3 in3 in3 Joules per kilograms (J/kg) kilo Pascal (kPa) kPa kPa Kilograms (kg) kg/hectare kg/ha kg/100 m2 kg/L Kilometers (Km)

Metric Conversion Factors

Multiply by 0.10 1000 10

0.00834595 0.13351

0.00020481 0.20481 2.471 107,639 107.64 746 550 1.014 2.540 0.0254 25.40 3.4 0.083 6.4516 16.3871 0.55411 0.01732 1 1 1 0.01 2.2046 0.892 0.02048 2.048 8.3454 100,000

To Obtain percent (%)

PPM Percent lbs/gal oz/gal

lb/ft2 lbs/1,000 ft2

Acres ft2

1,000 ft2 watts

ft-pounds/sec metric horsepower

Centimeters Meters

Millimeters kilopascals (kPa)

mm/mm cm2 cm3 fl oz qt kPa J/kg

0.01 bar bar

Pounds Pounds/acre lb/1,000 ft2 lbs/1,000 ft2

lb/gal Centimeters

139

To Convert Kilometers Kilometers Kilometers Kilometers Km/h Km/h Kilopascals (kPa) kPa kPa Liters (L) L L L L L/m2 L/100 m2 L/100 m2 Liters/hectare L/ha L/ha L/ha L/min Meters (m) Meters Meters Meters Meters Meters Meters/sec M2 (square meters) M2 M2

Metric Conversion Factors

Multiply by 3281 1000 0.6214 1094

0.62137 54.6807

0.145 1 1

0.2642 33.814 2.113 1.057 0.035315 3.2808 0.2454 1.9634 0.107 0.0025 0.314 0.855 15.85 3.281 39.37 1.094

100 0.001 1000 2.2369 10.764 1,550 1.196

To Obtain feet

meters miles yards MPH ft/min lbs/in2 (psi) 0.01 bar J/kg gallons ounces pints quarts

ft3 ft3/1,000 ft2 gal/1,000 ft2 pt/1,000 ft2 gallons/acre gal/1,000 ft2 oz/1,000 ft2

pt/A gal/hr Feet Inches yards Centimeters Kilometers Millimeters mph

ft2 in2 yd2

140

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