Themes > Science > Mathematics > About Mathematics, Generalities > Units & Measurement Conversion > Unit Conversion Tables for Areas

A note on the metric system:
Before you use this table convert to the base measurement first, in that convert centi-meters to meters, convert kilo-grams to grams. In this way, I don't have to list every imaginable combination of metric units.

The notation 1.23E - 4 stands for 1.23 x 10-4 = 0.000123.


from \ to = __ acres = __ feet2 = __ inches2 = __ meters2 = __ miles2 = __ yards2
acre 43560 6272640 4046.856... (1/640) 4840
foot2 (1/43560) 144 0.09290304 (1/27878400) (1/9)
inch2 (1/6272640) (1/144)   6.4516E - 4 3.587006E - 10 (1/1296)
meter2 2.471054...E - 4 10.76391... 1550.0031 3.861021...E - 7 1.195990...
mile2 640 27878400 2.78784E + 9 2.589988...E + 6 3097600
yard2 (1/4840) 9 1296 0.83612736 3.228305...E - 7



To use: Find the unit to convert from in the left column, and multiply it by the expression under the unit to convert to.
Examples: foot2 = 144 inches2; 2 feet2 = 2x144 inches2.

Useful Exact Area & Length Relationships

acre = (1/640) miles2
mile = 1760 yards = 5280 feet
yard = 3 feet = 36 inches
foot = 12 inches
inch = 2.54 centimeters
Note that when converting area units:
  1 foot = 12 inches
  (1 foot)2 = (12 inches)2 (square both sides)
  1 foot2 = 144 inches2
The linear & area relationships are not the same!


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