Area Converter From: acre Value: Unit: acre are (a) barn (b) hectare (ha) homestead rood square centimeter (cm²) square foot (ft²) square inch (in²) square kilometer (km²) square meter (m²) square mile square millimeter (mm²) square rod square yard (yd²) township (twp) To: acre Value: Unit: acre are (a) barn (b) hectare (ha) homestead rood square centimeter (cm²) square foot (ft²) square inch (in²) square kilometer (km²) square meter (m²) square mile square millimeter (mm²) square rod square yard (yd²) township (twp)