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       Basic Units Conversion
The three basic metric units are the meter (length), the gram (weight), and the liter (volume). The key to metric prefixes are: 1000 = kilo.; 100 = hecto.; 10 = deca.; 0.1 = deci.; 0.01 = centi.; 0.001 milli.

Length
1 kilometer =0.62137 mile
1 meter =3.2808 feet
1 centimeter =0.3937 inch
1 mile =1.6093 kilometers
1 foot =0.3048 meter
1 inch =2.54 centimeters

Weight
1 kilogram =2.2046 lbs.
1 gram =0.0353 ounce
1 short ton =907.1847 kilos
1 pound =0.4536 kilo
1 ounce =28.3495 grams

Volume
1 hectoliter = 100 liters = 0.1 cu. meter = 26.4172 gallons
1 liter = 100 centiliters = 1 cu. decimeter = 1.0567 quarts
1 gallon (U.S.) = 3.7853 liters    
1 cu. inch = 16.3871 cu. cm    

Area
1 sq. kilometer = 1 million sq. meters = 0.3861 sq. mile
1 hectare = 10,000 sq. meters = 2.471 acres
1 sq. meter = 10.7639 sq. feet = 1550.003 sq. inches
1 sq. mile = 640 acres = 258.9988 hectares
1 sq. foot = 144 sq. inches = 929.0304 sq. centimeters

 
  Symbol If You Know Multiply By To Find Symbol
Length mm
cm
m
m
km
in
ft
yd
mi
millimeters
centimeters
meters
meters
kilometers
inches
feet
yards
miles
0.03937
0.3937
3.3
1.1
0.6
2.54
30.48
0.9
1.6
inches
inches
feet
yards
miles
centimeters
centimeters
meters
kilometers
in
in
ft
yd
mi
cm
cm
m
km
Area cm
m
km
ha
in
ft
yd
mi
sq. centimeters
sq. meters
sq. kilometers
hectares (10000 m)
sq. inches
sq. feet
sq. yards
sq. miles
0.16
1.2
0.4
2.5
6.5
0.09
0.8
2.6
sq. inches
sq. yards
sq. miles
acres
sq. centimeters
sq. meters
sq. meters
sq. kilometers
in
yd
mi

cm
m
m
km
Weight g
kg
t
oz
lb
grams
kilograms
tonnes (1000 kg)
ounces
pounds
0.035
2.2046
1.1
28.3495
0.45
ounce
pounds
short tons
grams
kilograms
oz
lb

g
kg
Volume ml
l
l
l
m
m
tsp
tbsp
fl oz
c
pt
qt
gal
ft
yd
milliliters
liters
liters
liters
cu. meters
cu. meters
teaspoons
tablespoons
fluid ounces
cups
pints
quarts
gallons
cu. feet
cu. yards
0.03
2.1
1.06
0.26
35.314
1.3
5
15
30
0.24
0.47
0.95
3.8
0.03
0.76
fluid ounces
pints
quarts
gallons
cu. feet
cu. yards
millimeters
millimeters
millimeters
liters
liters
liters
liters
cu. meters
cu. meters
fl oz
pt
qt
gal
ft
yd
ml
ml
ml
l
l
l
l
m
m

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