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

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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

cm²
m²
km²
ha²
in²
ft²
yd²
mi²

sq. centimeters
sq. meters
sq. kilometers
hectares (10000 m²)
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

in²
yd²
mi²

cm²
m²
m²
km²

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
m³
m³
tsp
tbsp
fl oz
c
pt
qt
gal
ft³
yd³

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
ft³
yd³
ml
ml
ml
l
l
l
l
m³
m³