Unitvale

square kilometers (km²)

square kilometers as a conversion hub: 5 direct pairs, all with the exact factor on the page.

Definition1 km² = 1,000,000 m² exactly
CategoryArea Converter
Pairs from here5

Area Converter

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square kilometers converted to every other unit

km²m²sq ftsq ydacreha
1 km²1,000,00010,763,910.421,195,990.05247.105100
2 km²2,000,00021,527,820.832,391,980.09494.211200
5 km²5,000,00053,819,552.085,979,950.231,235.53500
10 km²10,000,000107,639,104.1711,959,900.462,471.051,000
20 km²20,000,000215,278,208.3323,919,800.934,942.112,000
50 km²50,000,000538,195,520.8459,799,502.3212,355.275,000
100 km²100,000,0001,076,391,041.67119,599,004.6324,710.5410,000

All conversions starting from km²

km² to m²km² to sq ftkm² to sq ydkm² to acrekm² to ha

Questions

How do I convert from square kilometers?
Pick the target unit from the table on this page, or open the dedicated pair page — each one carries a converter, a table of common values and the exact factor.
Is square kilometer exact or approximate?
The factor shown (1 km² = 1,000,000 m²) is fixed by definition, so conversions are exact rather than measured.
What is square kilometer used for?
square kilometers as used in practical measurements