ENGLISH AND METRIC SYSTEM UNITS OF MEASUREMENT
COMMON EQUIVALENTS AND CONVERSIONS
Approximate Common Equivalents
Conversions Accurate to Parts Per Million
(units stated in abbreviated form)
1 inch
1 foot
1 yard
1 mile **
1 square inch
1 square foot
1 square yard
1 acre
1 cubic inch
1 cubic foot
1 cubic yard
1 quart (lq.)
1 gallon
1 ounce (avdp)
1 pound (avdp)
1 horsepower
1 pound per square inch
1 millimeter
1 meter
1 meter
1 kilometer
1 square centimeter
1 square meter
1 square meter
1 hectare
1 cubic centimeter
1 cubic meter
1 cubic meter
1 liter
1 cubic meter
1 gram
1 kilogram
1 kilowatt
1 kilogram per square
centimeter
= 25 millimeters
= 0.3 meter
= 0.9 meter
= 1.6 kilometers
= 6.5 square centimeters
= 0.09 square meter
= 0.8 square meter
= 0.4 hectare
= 16 cubic centimeters
= 0.03 cubic meter
= 0.8 cubic meter
= 1 liter
= 0.004 cubic meter
= 28 grams
= 0.45 kilogram
= 0.75 kilowatt
= 0.07 kilogram per square centimeter
= 0.04 inch
= 3.3 feet
= 1.1 yards
= 0.6 mile
= 0.16 square inch
= 11 square feet
= 1.2 square yards
= 2.5 acres
= 0.06 cubic inch
= 35 cubic feet
= 1.3 cubic yards
= 1 quart (lq.)
= 250 gallons
= 0.035 ounces (avdp)
= 2.2 pounds (avdp)
= 1.3 horsepower
= 14.2 pounds per square inch
Number × Factor
in × 25.4
ft × 0.3048*
yd × 0.9144*
mix 1.60934
in2 × 6.4516*
ft2 × 0.0929030
yd2 × 0.836127
acres × 0.404686
in3 × 16.3871
ft3 × 0.0283168
yd3 × 0.764555
qt (lq.) × 0.946353
gal × 0.00378541
oz (avdp) × 28.3495
lb (avdp) × 0.453592
hp × 0.745700
psi × 0.0703224
mm × 0.0393701
m × 3.28084
m × 1.09361
km × 0.621371
cm2 × 0.155000
m2 × 10.7639
m2 × 1.19599
ha × 2.47105
cm3 × 0.0610237
m3 × 35.3147
m3 × 1.30795
l × 1.05669
m3 × 264.172
g × 0.0352740
kg × 2.20462
kW × 1.34102
kg/cm2 × 14.223226
= m m
= m
= m
=km
= cm2
= m2
= m2
= ha
= cm3
= m3
= m3
= l
= m3
=g
= kg
= k W
= kg/cm2
= in
= f t
= yd
=mi
= in2
= ft2
= yd2
= acres
= in3
= ft3
= yd3
= qt (lq.)
=gal
= oz (avdp)
= lb (avdp)
= h p
= psi
**nautical mile = 1.852 kilometers
*exact
AII-3
