1 square mile is equal to 639.99743989965 acres (US survey)
| square miles (sq mi) | acres (US survey) (ac) | 
|---|---|
| 30 | 19199.923196989 | 
| 40 | 25599.897595986 | 
| 50 | 31999.871994982 | 
| 60 | 38399.846393979 | 
| 70 | 44799.820792975 | 
| 80 | 51199.795191972 | 
| 90 | 57599.769590968 | 
| 100 | 63999.743989965 | 
| 110 | 70399.718388961 | 
| 120 | 76799.692787958 | 
| 130 | 83199.667186954 | 
| 140 | 89599.64158595 | 
| 150 | 95999.615984947 | 
| 160 | 102399.59038394 | 
| 170 | 108799.56478294 | 
To create a customized square miles to acres (US survey) conversion table, click on the "Create a customized area conversion table" button.