Square Measure
| 1 sq. mile | 2.59 kilometers |
| 1 circular mil | 0.7854 sq. mils |
| 1 sq. inch | 1,000,000 sq. mils |
| 1 sq. decimeter | 0.1076 sq. foot |
| 1 acre | 60 sq. rod |
| 1 sq. cm | 0.155 sq. inches |
| 1 sq. meter | 1.196 sq. yards = 10.784 sq. ft |
| 1 sq. kilometer | 0.386 sq. miles |
| 1 sq. inch | 6.452 sq. centimeters |
| 1 sq. foot | 929.03 sq. cm = 0.092903 sq. meters |
| 1 sq. yard | 0.8361 sq. meters |
