Square Rods (Perches) to Square Miles: the quick answer
1 rd² = 9.76563 × 10⁻⁶ mi²
1 square rod (perch) equals 9.76563 × 10⁻⁶ square miles
To convert square rods (perches) to square miles, multiply the value by 9.76563 × 10⁻⁶. To go the other way, multiply square miles by 102,400 to get square rods (perches).