Convert Square Foot to Square Mile

One sq ft equals 3.587006428e-8 sq mi. This converter allows you to easily convert between Square Foot and Square Mile in real time.

Formula

sq ft × 3.587006428e-8 = sq mi

Example: 1 sq ft = 3.587006428e-8 sq mi

What is Square Foot?

The square foot is a unit of area in the imperial and US customary systems, equal to a square with sides of one foot, or exactly 0.09290304 square meters. In the United States, it is the standard unit for expressing indoor floor area in real estate listings, with homes described as having, for example, "2,000 square feet." Flooring materials, carpet, and tiles are priced and sold per square foot. Commercial lease agreements also specify office and retail space in square feet.

What is Square Mile?

The square mile is a unit of area in the imperial and US customary systems, equal to a square with sides of one mile, or exactly 640 acres. In the United States and United Kingdom, it is used for the areas of counties, states, cities, and other large regions. Manhattan Island in New York City covers about 23 square miles, and the City of London is just 1.12 square miles. Population density figures in English-speaking countries are typically given as persons per square mile.