ft2 から km2 変換ツール - 平方フィート から 平方キロメートル

Conversion derivation

Express both ft2 and km2 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 km2 in the base unit

   $$1km2=1,000,000m2$$
3. 3

   Forward conversion

   $$\begin{array}{rl}1ft2& =\frac{0.092903\cancel{m2}}{1,000,000\cancel{m2}}\times 1km2\\ & =\frac{0.092903}{1,000,000}km2\\ & =9.2903\times 10^{-8}km2\end{array}$$
4. 4

   Reverse conversion

   $$\begin{array}{rl}1km2& =\frac{1,000,000\cancel{m2}}{0.092903\cancel{m2}}\times 1ft2\\ & =\frac{1,000,000}{0.092903}ft2\\ & =10,763,915.0512ft2\end{array}$$