| Code Value | Definition |
|---|---|
| ACR | acre |
| ARE | are |
| CMK | square centimetre |
| DAA | decare |
| DMK | square decimetre |
| FTK | square foot |
| H16 | square decametre |
| H18 | square hectometre |
| H30 | square micrometre (square micron) |
| H59 | square metre per newton |
| HAR | hectare |
| INK | square inch |
| KMK | square kilometre |
| M47 | circular mil |
| M48 | square mile (based on U.S. survey foot) |
| MIK | square mile (statute mile) |
| MMK | square millimetre |
| MTK | square metre |
| YDK | square yard |