Example 1: Input 2.25 square miles at the top of the first column and study the results carefully to see how it works
Example 2: Press Reset and then input 64516 square millimetres at the bottom of the last column (use mouse to point)
Example 3: Press Reset. In the second column input 247 acres, 510 square yards and 60 sq inches (almost exactly 1 sq kilometer)
Example 4: Press Reset. In the second column and enter 1 mile and 1280 acres. You will see it is 3 sq miles!
Example 5: Press Reset. Enter 2.5 sq miles in the second column!