m2 から km2 変換ツール - 平方メートル から 平方キロメートル

Conversion derivation

Express both m2 and km2 in the same base unit m2 (square meter), then cancel the shared base unit.

1. 1

   Rewrite m2 in the base unit

   $$1m2=1m2$$
2. 2

   Rewrite km2 in the base unit

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

   Forward conversion

   $$\begin{array}{rl}1m2& =\frac{1\cancel{m2}}{1,000,000\cancel{m2}}\times 1km2\\ & =\frac{1}{1,000,000}km2\\ & =0.000001km2\end{array}$$
4. 4

   Reverse conversion

   $$\begin{array}{rl}1km2& =\frac{1,000,000\cancel{m2}}{1\cancel{m2}}\times 1m2\\ & =\frac{1,000,000}{1}m2\\ & =1,000,000m2\end{array}$$