ts of meters,
liters, or grams can be done using the table. For example, to convert from
kilometers to meters, multiply by 1,000 (9.26 kilometers equals 9,260
meters) or to convert from meters to kilometers, multiply by 0.001 (9,260
meters equals 9.26 kilometers).

Prefix Symbol Length, weight,
or capacity Area Volume
exa E 10^18 10^36 10^54
peta P 10^15 10^30 10^45
tera T 10^12 10^24 10^36
giga G 10^9 10^18 10^27
mega M 10^6 10^12 10^18
hectokilo hk 10^5 10^10 10^15
myria ma 10^4 10^8 10^12
kilo k 10^3 10^6 10^9
hecto h 10^2 10^4 10^6
basic unit - 1 meter, 1 meter^2 1 meter^3
1 gram,
1 liter
deci d 10-^1 10-^2 10-^3
centi c 10-^2 10-^4 10-^6
milli m 10-^3 10-^6 10-^9
decimilli dm 10-^4 10-^8 10-^12
centimilli cm 10-^5 10-^10 10-^15
micro u 10-^6 10-^12 10-^18
nano n 10-^9 10-^18 10-^27
pico p 10-^12 10-^24 10-^36
femto f 10-^15 10-^30 10-^45
atto a 10-^18 10-^36 10-^54

Equivalents

Units Metric Equivalent US Equivalent

acre 0.404 685 64 hectares 43,560 feet^2
acre 4,046,856 4 meters^2 4,840 yards^2
acre 0.004 046 856 4 0.001 562 5 miles^2,
kilometers^2 statute
are 100 meters^2 119.599 yards^2
barrel
(petroleum, US) 158.987 29 liters 42 gallons
(proof spirits, US) 151.416 47 liters 40 gallons
(beer, US) 117.347 77 liters 31 gallons
bushel 35.239 07 liters 4 pecks
cable 219.456 meters