What is square kilometers?

The square meters is a unit used to measure area. It is part of SI unit system and has the symbol m^2 ($m^2$)

$$1\ km^2 = 1×10^{6} m^2 = 1×10^12\ mm^2$$

$$1\ km^2 = 1.0763911×10^7 ft^2 = 1.195990×10^6 yd^2 = 1.550031×10^9 in^2$$

Wikipedia page for Square kilometre

What is square meters?

The square meters is a unit used to measure area. It is part of SI unit system and has the symbol m^2 ($m^2$)

$$1 m^2 = 10^{-6} km^2 = 10^6 mm^2 = 10.763911 ft^2 = 1.195990 yd^2 = 1550.0031 in^2$$

Wikipedia page for Square metre