Esri area measurement units.
| Constant | Value | Description |
|---|---|---|
| esriUnknownAreaUnits | 0 | Unknown |
| esriSquareInches | 1 | International Square Inches. |
| esriSquareFeet | 2 | International Square Feet. |
| esriSquareYards | 3 | International Square Yards. |
| esriAcres | 4 | International Acres. |
| esriSquareMiles | 5 | International Square Miles. |
| esriSquareMillimeters | 6 | International Square Millimeters. |
| esriSquareCentimeters | 7 | Square Centimeters. |
| esriSquareDecimeters | 8 | Square Decimeters. |
| esriSquareMeters | 9 | Square Meters. |
| esriAres | 10 | Ares. |
| esriHectares | 11 | Hectares. |
| esriSquareKilometers | 12 | Square Kilometers. |
| esriSquareInchesUS | 13 | Square US Survey Inches. |
| esriSquareFeetUS | 14 | Square US Survey Feet. |
| esriSquareYardsUS | 15 | Square US Survey Yards. |
| esriAcresUS | 16 | US Survey Acres. |
| esriSquareMilesUS | 17 | Square US Survey Miles. |
| esriSquareNauticalMiles | 18 | Square International Nautical Miles. |
| esriSquareNauticalMilesUS | 19 | Square US Nautical Miles. |
| esriAreaUnitsLast | 20 | Internal use only. |