squareInches The square inches unit of area. Declaration@NSCopying class var squareInches: UnitArea { get } See AlsoAccessing Predefined UnitssquareMegameterssquareKilometerssquareMeterssquareCentimeterssquareMillimeterssquareMicrometerssquareNanometerssquareFeetsquareYardssquareMilesacresareshectares