Convert from square mile to carucate

Unit Definition (square mile)
The square mile is a traditional unit of area. One square mile is equal to 640 acres, 3 097 600 square yards, 258.9988 hectares, or 2.589 988 square kilometers.

Unit Definition (carucate)
The Carucate is an another name for the hide, an old English unit of land area. The name comes from a Latin word meaning "plowland".