Square Feet to Square Miles

Square feet to square miles conversion calculator is used to convert square feet to square miles. To calculate how many square miles in a square foot, divide by 27878400.

How many square miles in a square foot?

There are 0.000000036 square miles in a square foot, or
1 sq ft = 0.000000036 sq miles.

Square feet is an area unit that is calculated by feet multiplying feet.
1 foot = 1/5280 miles, therefore
1 square foot = 1 foot x 1 foot = 1/5280 miles x 1/5280 miles
= 1/27878400 square miles.