The ancient Romans used a system of measurements that included units for length, area, and volume. The basic unit of length was the foot, which was divided into 12 inches. Other important units included the mile, equivalent to 1,000 paces, and the stadium, used for measuring distances in races. For measuring area, the Romans used the iugerum, which was roughly equivalent to 0.25 acres. Volume was measured in sextarii, with one sextarius equal to about 0.5 liters. These measurements were essential for trade, construction, and agriculture in the Roman Empire.