EQUIVALENTS
LENGTHS

     1 centimeter............................ 0.3937 inch
     1 fathom.................................... 6 feet
     1 league.................................... 3 miles
     1 furlong................................... 660 feet.................... 1/8 mile
     1 inch......................................... 2.54 centimeters
     1 meter...................................... 39.37 inches
     1 mil............................................ 0.001 inch................ 0.0254 millimeters
     1 statute mile.......................... 5280 feet.................. 1.609 kilometers
     1 nautical mile........................ 6076.11 feet
     1 rod.......................................... 16.5 feet................... 5.029 meters
     1 yard........................................ 0.9144 meters
     1 angstrom.............................. 0.1 nanometer



VOLUMES

     1 barrel (crude oil) ................ 42 gallons
     1 barrel (liquor) ...................... 31 gallons
     1 standard barrel .................. 3.281 bushels
     1 bushel ................................... 35.239 liters ........... 4 pecks
     1 cord firewood ..................... 128 cubic feet ....... 2 ricks firewood
     1 U.S. gallon ........................... 3.785 liters .............. 8.34 pounds of water
     1 peck ...................................... 8.810 liters .............. 0.25 bushels
     1 U.S. fluid ounce .................. 29.573 milliliters
     1 quart liquid .......................... 0.946 liters .............. 2 pints
     1 tablespoon ......................... 3 teaspoons ......... 0.5 fluid ounce
     1 teaspoon ............................. 1/3 tablespoon ..... 4.93 milliliters
     1 cup ......................................... 8 fluid ounces........ 0.5 pints
     1 cubic foot ............................ 7.43 gallons ........... 62.9 pounds water
     1 liter ......................................... 1 dm3........................ 1 kg water



WEIGHTS

     1 bale of cotton ..................... 500 pounds
     1 carat ...................................... 200 milligrams
     1 grain ...................................... 64.799 milligrams
     1 gram ...................................... 15.432 grains
     1 dry ounce ............................ 28.350 grams
     1 ton .......................................... 2,000 pounds
     1 pound ................................... 453.592 grams
     1 kilogram ............................... 2.205 pounds



AMOUNTS

     1 mole ...................................... 6.02 X 1023
     1 gross .................................... 144
     1 bunch ...................................  10 
     1 calorie .................................. 4.18 joule
     1 AMU .......................................  1.662 X 10-24 gram
     1 electron (mass) ................. 5.486 X 10-4 AMU
     1 proton (mass) .................... 1.0073 AMU
     1 neutron (mass) .................. 1.0087 AMU
     light speed (vacuum) .......... 2.99 X 108 m/s
     sound speed (air@20oC) ... 343 m/s
Unit of Measurement
Conversion Factor
Millimeter to Inch 1 millimeter = 0.03937008 inch
Centimeter to Inch 1 centimeter = 0.3937008 inch
Meter to Feet 1 meter = 3.28084 feet
Meter to Yards 1 meter = 1.093613 yards
Kilometer to Mile 1 kilometer = 0.621371 mile
Square Meter to Square Feet 1 square meter = 10.76391 square feet
Hectare to Acres 1 hectare = 2.471054 acres
Square Kilometer to Square Mile 1 square kilometer = 0.386102 square mile
Cubic Centimeter to Cubic Inch 1 cubic centimeter = 0.06102374 cubic inch
Cubic Meter to Cubic Feet 1 cubic meter = 35.31467 cubic feet
Cubic Meter to Cubic Yards 1 cubic meter = 1.307951 cubic yards
Gram to Ounce 1 gram = 0.035274 ounce
Kilogram to Pounds 1 kilogram = 2.2046224 pounds
Metric Ton to Short (2000 lbs) Tons 1 metric ton = 1.1023 short tons
Liter (liquid) to Quarts 1 liter = 1.056688 quarts
Liter to Gallon 1 liter = 0.264172052 gallon
Liter (dry) to Quart 1 liter = 0.908083 quart
Liter to Bushel 1 liter = 0.02837759 bushel
Celsius to Fahrenheit 1.8 X Celsius + 32
Unit of Measurement
Conversion Factors
Inch to Millimeters 1 inch = 25.4 millimeters
Inch to Centimeters 1 inch = 2.54 centimeters
Inch to Meter 1 inch = 0.0254 meters
Foot to Centimeters 1 foot = 30.48 centimeters
Foot to Meter 1 foot = 0.3048 meters
Mile to Meters 1 mile = 1609.3404 meters
Mile to Kilometers 1 mile = 1.609344 kilometers
Square Foot to Square Meter 1 square foot = 0.09290304 square meter
Acre to Square Meters 1 acre = 4046.85642 square meters
Acre to Hectare 1 acre = 0.404685642 hectares
Square Mile to Square Kilometers 1 square mile = 2.589988 square kilometers
Cubic Inch to Cubic Centimeters 1 cubic inch = 16.387064 cubic centimeters
Cubic Foot to Cubic Meter 1 cubic foot = 0.02831685 cubic meter
Cubic Yard to Cubic Meter 1 cubic yard = 0.764555 cubic meter
Ounce to Grams 1 ounce = 28.349523 grams
Pound to Grams 1 pound = 453.59237 grams
Pound to Kilogram 1 pound = 0.45359237 kilograms
Ton (2000 lbs) to Metric Ton 1 Ton = 0.9072 metric ton
Ounce (liquid) to Liter 1 ounce = 0.02957353 liter
Quart to Liter 1 quart = 0.9472 liter
Gallon to Liters 1 gallon = 3.785306 liters
Quart (dry) to Liters 1 quart = 1.10122 liters
Peck to Liters 1 peck = 8.8097675 liters
Bushel to Liters 1 bushel = 35.2392 liters
Fahrenheit to Celsius Celsius = Fahrenheit - 32 X .5556


 
NUMBERS

NUMBERS GREATER THAN ONE

 PREFIX 
 SYMBOL 
MULTIPLES  EQUIVALENT
anton
A
(10100)100
antonplex
-
-
(1010)100
googolplex
-
-
10100
googol
Yotta
Y
1024
heptillion
zetta
Z
1021
hexillion
exa E 1018 quintillionfold
peta P 1015 quadrillionfold
tera T 1012 trillionfold
giga G 109 billionfold
mega M 106 millionfold
kilo k 103 thousandfold
hecto h 102 hundredfold
deka dk,da 101 tenfold

NUMBERS LESS THAN ONE
deci d 10-1 tenth
centi c 10-2 hundredth
milli m 10-3 thousandth
micro µ (mu) 10-6 millionth
nano n 10-9 billionth
pico p 10-12 trillionth
femto f 10-15 quadrillionth
atto a 10-18 quintillionth
zepto
z
10-21
hexillionth
yocto
y
10-24
heptillionth

 
 
GIANT NUMBERS


ROMAN NUMERALS

Designation
Number
of Zeros
million 6
billion 9
trillion 12
quadrillion 15
quintillion 18
sextillion 21
septillion 24
octillion 27
nonillion 30
decillion 33




 






I 1
XI 11
CD 400
II 2
XII 12
D 500
III 3
XIII 13
M 1,000
IV 4
XIV 14


V 5
XV 15


VI 6
XVI 16


VII 7
XVII 17


VIII 8
XVIII 18


IX 9
XIX 19


X 10
XX 20










TEMPERATURE CONVERSIONS
(Celsius, Fahrenheit, Kelvin, Rankine)