# How many Acres in a Square Mile?

Area can be measured by units such as acre and square mile.

## Answer: There are 640 acres in 1 square mile.

**Explanation:**

If we have a value expressed in square miles we have to multiply it by a factor of 640 to convert it into acres.

Both acres and miles belong to the US customary system of measurement.

You can use this calculator to do conversions.