ft2 to mi2 Converter - Square Foot to Square Mile

Conversion derivation

Express both ft2 and mi2 in the same base unit m2 (square meter), then cancel the shared base unit.

1. 1

   Rewrite ft2 in the base unit

   $$1ft2=0.092903m2$$
2. 2

   Rewrite mi2 in the base unit

   $$1mi2=2,589,988.11m2$$
3. 3

   Forward conversion

   $$\begin{array}{rl}1ft2& =\frac{0.092903\cancel{m2}}{2,589,988.11\cancel{m2}}\times 1mi2\\ & =\frac{0.092903}{2,589,988.11}mi2\\ & =3.58700488\times 10^{-8}mi2\end{array}$$
4. 4

   Reverse conversion

   $$\begin{array}{rl}1mi2& =\frac{2,589,988.11\cancel{m2}}{0.092903\cancel{m2}}\times 1ft2\\ & =\frac{2,589,988.11}{0.092903}ft2\\ & =27,878,411.9996ft2\end{array}$$