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IFA University of Flor
A~ricult ral Research Center
ARC Research Report RH
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early records indicate t
s, round and dry" when 1
a man's arm.
s first message in 1790,
'or America to set its ov
'h6m e .1tAffnrenn cihmi4+
ric" system
iel Mouton,
s circumfere
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of weights and measures. TD
It was based on a concept
in which the meter was defir
nce. The scheme was radical
4U 1 3 1 "I I us1J IIIIU I I I I
France, and then other nal
dards continued in the Unit
ly, the metric system is n
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CONVERSION FACTORS
OLD U.S.
Multiply By
Acres 43,560
Bushels 64
Cubic Feet 1,728
Cubic Yards 46,656
Feet 12
Gallons 4
Miles 5,280
Ounces 2
Pints 16
Pounds 16
Quarts 2
Square Feet 144
Tablespoons 3
Tons 2,000
CONVERSION FACTORS
Multiply
Centimeters
Cubic Meters
Grams
Hectares
Kilograms
Kiloliters
Kilometers
Liters
Meters
Square Meters
METRIC
By
10
1,000,000
1,000
10,000
1,000
1,000
1,000
1,000
100
10,000
To Obtain
Millimeters
Cubic Centimeters
Milligrams
Square Meters
Grams
Liters
Meters
Milliliters
Centimeters
Square Centimeters
METRIC SYSTEM: A decimal system of weights and measurements.
Milli
Centi
Deci
= 1/1,000
= 1/100
= 1/10
Deca =
Hecto =
Kilo =
10
100
1,000
METRIC
Lite
VERSION FP
1. oz. 8
1. oz. 2
1. oz. 1
1. oz. 3/4
ter
10
2.5
1.2
0.8
   
EXAMPLE NO. 1
Suggested:
Problem:
Conversion:
OLD U.S.
100 pounds/acre
How many pounds/500 sq. ft.?
Acre = 43,560 sq. ft.
Pound = 16 ounces
1) 100 pounds ?
43,560 sq. ft. 500 sq. ft.
2) 100 x 500
43,560
3) 1.14 pounds = ?
4) 1.14 pounds = one pound, 2 1/4 ounces
Suggested:
Problem:
Conversion:
METRIC
100 kilograms/hectare
How many kilograms/50 sq. m.?
Kilogram = 1,000 g.
Hectare = 10,000 sq. m.
1) 100 kilograms ?
10,000 sq. m. 50 sq. m.
2) 50 x 100 ?
10,000
3) 0.5 kg = ?
4) 0.5 kg = 500 g
ested: 6 gal
lem: How mi
version: Acre =
Gallot
Quart
48 pts
3,560 sq. ft.
8 x 1,000 ,
43,560
.1 pts. = ?
60 1
0,000
0 x ii
cre
lions/1,000
60 sq. ft.
qts.
ts.
00 s. f
00 sq. ft.
ers
q. m.
) 0
I
Conversion:
1) 48 tbsp
1nn An1
How many tablespoons/gallon?
Pint = 32 tbsp.
1
1 gal.
I UU
3) .48 tbsp. = ?
METRIC
Suggested: 1 liter/400 liters
Problem: How many milliliters/liter?
Conversion: Liter = 1.000 milliliters
2) 1,000 x
400
2.5 ml
2.5 mi
8
EXAMPLE NO. 4
OLD U.S.
Suggested: 3/4 pint/sq. ft.
Problem: How many gallons/100 sq. ft.?
Conversion: Gallon = 4 quarts
Quart = 2 pints
1) 0.75 pints ?
1 sq. ft. 100 sq. ft.
2) 0.75 x 100
1
3) 75 pints = ?
4) 75 pints = 9.4 gallons
5) 9.4 gallons = 9 gal., 1 qt., 1 pt.
METRIC
Suggested: 4 liters/l sq. meter
Problem: How many liters/10 sq. meters?
1) 4 liters ?
1 sq. m. 10 sq. m.
2) 4 x 10
1 = ?
3) 40 liters = ?
V
V
EXAMPLE NO. 5
OLD U.5
Suggested:
10 pounds/cubic yard
Problem: How many ounces/2 cubic f,
Conversion: Cubic yard = 27 cubic fee
Pound = 16 ounces
1) 160 ounces
27 cu. ft. 2
ft.
2) 2 x 160
27
3) 11.85 ounces = ?
METRIC
Suggested: 5 kilograms/cubic mete
Problem: How many grams/60 lite,
Conversion: kilogram = 1,000 grams
cubic meter = 1,000 li
1) 5,000 g ?
2) 5,000 x 60
3) 300 g = ?
y
pp
EXAMPLE NO. 6
OLD U.S.
Suggested:
200 ppm in 100 gallons
Problem: Weight of material
Conversion: Gallon water = 8.3 pounds
Pound = 16 ounces
1) 200 pounds
1,000,000 pounds
?
830 pounds
2) 200 x 830
1,000,000
3) 0.166 pounds = ?
4) 0.166 pounds = 2.5 ozs.
METRIC
Suggested: 200 ppm in 400 liters
Problem: Weight of material
Conversion: Liter water = kilogram
Kilogram = 1,000 g
1) 200 g
1,000,000 g
2) 200 x 400,000 = ,
1,000,000
3) 80 g= ?
400,000 g
This public document was promulgated at
an annual cost of $37.10 or $.074 per
copy to inform county and state
extension personnel, foliage growers,
marketers and allied trades of research
results and improved practices in
ornamental horticulture.
10
