In 1 square miles there are 4,014,489,600.000001 square inches. Meanwhile in 1 square inches there are 2.49098e-10 square miles. Keep reading to learn more about each unit of measure and how they are calculated. Or just use the Square inches to Square miles calculator above to convert any number.
* Values rounded to 6 decimal places for readability
To convert square miles (sq mi) to square inches (sq in), convert miles to inches first, then square the result. This works because area units scale by the square of the length conversion.
Conversion formula
Quick example
Use this method any time you need a clean square miles to square inches conversion for land, maps, or large area measurements.
There are 4,014,489,600 square inches in 1 square mile.
Use this exact factor:
Convert in two quick steps:
Example:
0.5 sq mi × 4,014,489,600 = 2,007,244,800 sq in
Area units scale by squaring the length change. One mile equals 63,360 inches. For area, you square that:
(63,360 inches)² = 4,014,489,600 square inches
Yes, and it gives the same result. Use these steps:
Multiply by the conversion factor:
0.01 sq mi × 4,014,489,600 = 40,144,896 sq in
2 sq mi × 4,014,489,600 = 8,028,979,200 sq in
Divide by the same factor:
Example:
8,028,979,200 sq in ÷ 4,014,489,600 = 2 sq mi
Yes. Both are used in the US customary system, and they also match the imperial inch and mile lengths used in many measurements.
This conversion comes up when you need very fine detail from a large area. Common cases include:
The Calculate Box tool to convert square miles to square inches uses the open source script Convert.js to convert units of measurement. To use this tool, simply type a square miles value in the box and have it instantly converted to square inches.