| Area | ||
| Symbol | Unit Name | |
| 2.47105×1026 | ac, acre | acre |
| 1×1058 | b | barn |
| 1×1026 | ha | hectare |
| 1×1034 | cm2 | square centimeter |
| 1.07639×1031 | ft2 | square foot |
| 1×1026 | hm2 | square hectometer |
| 1.55×1033 | in2, sq. in | square inch |
| 1×1024 | km2 | square kilometer |
| 1×1030 | m2 | square meter |
| 1×1042 | µm2 | square micrometer |
| 1.55×1039 | mil2 | square mil (thou) |
| 3.86101×1023 | sq. mi. (int.) | square mile (int.) |
| 1×1036 | mm2 | square millimeter |
| 1.19599×1030 | yd2, sq. yd | square yard |















