METRIC CONVERSIONS.
The following table contains the most common conversions from/to the metric
system.
What makes this table unique is the rightmost column which contains the
formula for deriving the conversion factors.

Before embarking on conversions, there are 11 constants, which I have called
Basic Constants, which most everyone knows, or should know, such as:
1 foot      =     12      inches
1 yard      =      3      feet
1 mile      =  5,280      feet
1 meter     =    100      centimeters
1 kilometer =  1,000      meters
1 acre      = 43,560      sq. ft.
1 hectare   = 10,000      square meters
16 ounces   =      1      pound
2000 pounds =      1      ton (short)
1 quart     =      2      pints
1 gallon    =      4      quarts

The conversion table covers measurements of Length, Area, Volume, Liquid
Capacity, and Weight. To compute all these measurements, in addition to the
above-mentioned Basic Constants, only the following 3 factors are required:
1 inch   = 2.5400 centimeters
1 pound  = 0.4536 kilos
1 gallon = 3.7854 liters

The whole point is that the conversion factors in this table were not
transcribed from another publication, but were derived using the above
factors, as indicated by the formulas in the rightmost column. To eliminate
possible computation errors, the results were also verified against standard
metric conversion tables.

I'm sure you can see the value of this technique if you were writing a
program to generate these conversions.


CONVERSION TABLE FOR METRIC AND IMPERIAL-US SYSTEMS
===================================================

ABBREVIATIONS
=============
cm2  = square centimeters
m2   = square meters
km2  = square kilometers
cm3  = cubic centimeters
m3   = cubic meters
(X)^2= X squared
(X)^3= X cubed


LENGTH MEASUREMENTS
===================

BASIC CONSTANTS
---------------
1 foot        =     12      inches
1 yard        =      3      feet
1 mile        =  5,280      feet
1 meter       =    100      centimeters
1 kilometer   =  1,000      meters

IMPERIAL-US TO METRIC
---------------------
1 inch        =      2.5400 centimeters   2.54
1 inch        =      0.0254 meters        2.54/100
1 foot        =     30.4800 centimeters   2.54*12
1 foot        =      0.3048 meters        2.54*12/100
1 yard        =     91.4400 centimeters   2.54*12*3
1 yard        =      0.9144 meters        2.54*12*3/100
1 mile        =   1609.3440 meters        2.54*12*5280/100
1 mile        =      1.6093 kilometers    2.54*12*5280/100/1000

METRIC TO IMPERIAL-US
---------------------
1 centimeter  =      0.3937 inches        1/2.54
1 meter       =     39.3700 inches        1/2.54*100
1 meter       =      3.2808 feet          1/2.54*100/12
1 meter       =      1.0936 yards         1/2.54*100/12/3
1 kilometer   =      0.6214 miles         1/2.54*100/12*1000/5280


AREA MEASUREMENTS
=================

BASIC CONSTANTS
---------------
1 acre        = 43,560      sq. ft.
1 hectare     = 10,000      square meters

IMPERIAL-US TO METRIC
---------------------
1 sq. in.     =      6.4516 cm2           (2.54)^2
1 sq. ft.     =    929.0304 cm2           (2.54*12)^2
1 sq. ft.     =      0.0929 m2            (2.54*12/100)^2
1 sq. yd.     =      0.8361 m2            (2.54*12*3/100)^2
1 acre        =  4,046.8564 m2            (2.54*12/100)^2 * 43560
1 acre        =      0.4047 hectare       (2.54*12/100)^2 * 43560/10000
1 sq. mi.     =      2.5900 km2           (2.54*12/100)^2 * (5280/1000)^2

METRIC TO IMPERIAL-US
---------------------
1 cm2         =      0.1550 sq. in.       (1/2.54)^2
1 m2          =  1,550.0031 sq. in.       (1/2.54*100)^2
1 m2          =     10.7639 sq. ft.       (1/2.54*100/12)^2
1 m2          =      1.1959 sq. yd.       (1/2.54*100/12/3)^2
1 km2         =      0.3861 sq. mi.       (1/2.54*100/12*1000/5280)^2
1 hectare     =      2.4711 acres         (1/2.54*100/12)^2 * 10000/43560


VOLUME MEASUREMENTS
===================

IMPERIAL-US TO METRIC
---------------------
1 cu. in.     =     16.3871 cm3           (2.54)^3
1 cu. ft.     = 28,316.8466 cm3           (2.54*12)^3
1 cu. ft.     =      0.0283 m3            (2.54*12/100)^3
1 cu. yd.     =      0.7646 m3            (2.54*12*3/100)^3

METRIC TO IMPERIAL-US
---------------------
1 cm3         =      0.0610 cu. in.       (1/2.54)^3
1 m3          = 61,023.7441 cu. in.       (1/2.54*100)^3
1 m3          =     35.3147 cu. ft.       (1/2.54*100/12)^3
1 m3          =      1.3080 cu. yd.       (1/2.54*100/12/3)^3


LIQUID CAPACITY MEASUREMENTS
============================

BASIC CONSTANTS
---------------
1 quart       =      2      pints
1 gallon      =      4      quarts

IMPERIAL-US TO METRIC
---------------------
1 gallon      =      3.7854 liters
1 quart       =      0.9464 liters        3.7854/4
1 pint        =      0.4732 liters        3.7854/4/2

METRIC TO IMPERIAL-US
---------------------
1 liter       =      0.2642 gallons       1/3.7854
1 liter       =      1.0567 quarts        1/3.7854*4
1 liter       =      2.1134 pints         1/3.7854*4*2


WEIGHT MEASUREMENTS
===================

BASIC CONSTANTS
---------------
 16 ounces   =      1      pound
2000 pounds   =      1      ton (short)

IMPERIAL-US TO METRIC
---------------------
1 pound       =      0.4536 kilos
1 ounce       =      0.0284 kilos         .4536/16
1 ton (short) =    907.2000 kilos         .4536*2000

METRIC TO IMPERIAL-US
---------------------
1 kilo        =      2.2046 pounds        1/.4536
1 kilo        =     35.2734 ounces        1/.4536*16
1 metric ton  =  2,204.5855 pounds        1/.4536*1000
1 metric ton  =      1.1023 tons (short)  1/.4536*1000/2000