The square and cubic units are the squares and cubes of the linear units.
The ordinary unit of land area is the Hectare (about 2-1/2 acres).
U.S. BUREAU OF STANDARDS TABLE OF METRIC EQUIVALENTS
Meter = 39.37 inches.
Legal Equivalent Adopted by Act of Congress July 28, 1866.
Length.
| Centimeter | = 0.3937 inch |
| Meter | = 3.28 feet |
| Meter | = 1.094 yards |
| Kilometer | = 0.621 statute mile |
| Kilometer | = 0.5396 nautical mile |
| Inch | = 2.540 centimeters |
| Foot | = 0.305 meter |
| Yard | = 0.914 meter |
| Statute mile | = 1.61 kilometers |
| Nautical mile | = 1.853 kilometers |
Area.
| Sq. centimeter | = 0.155 sq. inch |
| Sq. meter | = 10.76 sq. feet |
| Sq. meter | = 1.196 sq. yards |
| Hectare | = 2.47 acres |
| Sq. kilometer | = 0.386 sq. mile |
| Sq. inch | = 6.45 sq. centimeters |
| Sq. foot | = 0.0929 sq. meter |
| Sq. yard | = 0.836 sq. meter |
| Acre | = 0.405 hectare |
| Sq. mile | = 2.59 sq. kilometers |