### Units

2005年12月12日(月) 9時29分

a:atto = 10^-18

f:femto = 10^-15

p:pico = 10^-12

n:nano = 10^-9

μ:micro = 10^-6

m:milli = 10^-3

c:centi = 10^-2

d:deci = 10^-1

da:deca = 10

h:hecto = 10^2

k:kilo = 10^3

M:mega = 10^6

G:giga = 10^9

T:tera = 10^12

P:peta = 10^15

E:exa = 10^18

★Length

1 maile = 1760 yards = 1.6093 km

1 yard = 3 feet =0.9144 m

1 foot = 12 inchs = 0.3048 m

1 inch = 2.54 cm

1 AU = 1.4959787066×10^11 m

1 ly (light-year)= 9.46×10^12 km

1 pc = 3.26 ly = 3.09×10^12 km

★Volume

1 gallon = 4.546 l (in Britain),3.785 l (in USA)

1 barrel = 163.66 l (in Britain),158.99 l (in USA)

★Mass

1 pound = 16 ounces = 453.6 g

1 ounce = 28.35 g

1 carat = 200 mg

★Money

1 dollar = 100 cents ≒ 120.75~120.77 yen(12/12 9:36)

f:femto = 10^-15

p:pico = 10^-12

n:nano = 10^-9

μ:micro = 10^-6

m:milli = 10^-3

c:centi = 10^-2

d:deci = 10^-1

da:deca = 10

h:hecto = 10^2

k:kilo = 10^3

M:mega = 10^6

G:giga = 10^9

T:tera = 10^12

P:peta = 10^15

E:exa = 10^18

★Length

1 maile = 1760 yards = 1.6093 km

1 yard = 3 feet =0.9144 m

1 foot = 12 inchs = 0.3048 m

1 inch = 2.54 cm

1 AU = 1.4959787066×10^11 m

1 ly (light-year)= 9.46×10^12 km

1 pc = 3.26 ly = 3.09×10^12 km

★Volume

1 gallon = 4.546 l (in Britain),3.785 l (in USA)

1 barrel = 163.66 l (in Britain),158.99 l (in USA)

★Mass

1 pound = 16 ounces = 453.6 g

1 ounce = 28.35 g

1 carat = 200 mg

★Money

1 dollar = 100 cents ≒ 120.75~120.77 yen(12/12 9:36)

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