Cubic Mile [mi³]
The cubic mile (mi³) is a unit of volume used primarily in the United States and other countries that use the imperial system. It represents the volume of a cube with each side measuring one mile.
It is used to measure very large volumes, such as the capacity of lakes, reservoirs, or geological formations.
Summary:
1 cubic mile = volume of a 1 mile × 1 mile × 1 mile cube
Equals about 4.168 × 10⁹ cubic meters
Used for large-scale volume measurements in geography and earth sciences