FIGURE A.1 A comparison
of Fahrenheit and Celsius
temperature scales.
525
A P P E N D I X
A
Units
1 kilometer (km) = 1000 meters (m)
1 meter (m) = 100 centimeters (cm)
1 centimeter (cm) = 0.39 inch (in.)
1 mile (mi) = 5280 feet (ft)
1 foot (ft) = 12 inches (in.)
1 inch (in.) = 2.54 centimeters (cm)
1 squre mile (mi
2
) = 640 acres (a)
1 kilogram (kg) = 1000 grams (g)
1 pound (lb) = 16 ounces (oz)
1 fathom = 6 feet (ft)
Conversions
A P P E N D I X A
Metric and English Units Compared
When you want
to convert:
Multiply by:
To find:
inches
2.54
centimeters
centimeters
0.39
inches
feet
0.30
meters
meters
3.28
feet
yards
0.91
meters
meters
1.09
yards
miles
1.61
kilometers
kilometers
0.62
miles
square inches
6.45
square centimeters
square centimeters
0.15
square inches
square feet
0.09
square meters
square meters
10.76
square feet
square miles
2.59
square kilometers
square kilometers
0.39
square miles
cubic inches
16.38
cubic centimeters
cubic centimeters
0.06
cubic inches
cubic feet
0.028
cubic meters
cubic meters
35.3
cubic feet
cubic miles
4.17
cubic kilometers
cubic kilometers
0.24
cubic miles
liters
1.06
quarts
liters
0.26
gallons
gallons
3.78
liters
ounces
28.33
grams
grams
0.035
ounces
pounds
0.45
kilograms
kilograms
2.205
pounds
When you want to convert degrees Fahrenheit ( ) to degrees
Celsius ( ), subtract 32 degrees and divide by 1.8.
°C
°F
When you want to convert degrees Celsius ( ) to degrees
Fahrenheit ( ), multiply by 1.8 and add 32 degrees.
°F
°C
When you want to convert degrees Celsius ( ) to
kelvins (K), delete the degree symbol and add 273. When
you want to convert kelvins (K) to degrees Celsius ( ), add
the degree symbol and subtract 273.
°C
°C
LENGTH
AREA
VOLUME
MASSES AND WEIGHTS
TEMPERATURE
°F
°C
210
200
190
180
170
160
150
140
130
120
110
100
90
80
70
80
70
60
50
40
30
20
10
0
–10
–20
60
50
40
30
20
10
0
–10
100
90