How to convert hectares to square kilometers
To convert a measurement in hectares to square kilometers, multiply the value by 0.01. The conversion factor comes from the relationship between both units and the square meter.
For example, to convert 5 ha to square kilometers: 5 × 0.01 = 0.05 km².
What is a hectare?
A hectare is a metric unit of area equal to 10,000 square meters, or a square 100 meters on each side, about 2.471 acres. Coined in 1795 from the Greek 'hekaton' (hundred) and 'are', the hectare is the standard unit for land area in agriculture and forestry across most of the world, filling the gap between the square meter and the square kilometer.
Common uses of hectares include: Farmland and agricultural plot size; Forestry and conservation areas; Real estate land parcels; Parks and land-use planning.
What is a square kilometer?
A square kilometer is a metric unit of area equal to the area of a square one kilometer on each side, or 1,000,000 square meters. The square kilometer became the standard unit for large land areas as the metric system spread. It is used for the areas of cities, countries, lakes, and other geographic features worldwide.
Common uses of square kilometers include: Areas of cities, countries, and regions; Land, forest, and agricultural coverage; Lake and reservoir surface area; Population density (people per km²).
Hectares to square kilometers worked examples
Here are some common values converted:
1 ha = 0.01 km² 5 ha = 0.05 km² 10 ha = 0.1 km² 50 ha = 0.5 km² 100 ha = 1 km²
Frequently asked questions
How many square kilometers are in one hectare?
One hectare (ha) equals 0.01 square kilometers (km²). Multiply any value in hectares by 0.01 to convert to square kilometers.
How do I convert hectares to square kilometers?
Multiply the value in hectares by 0.01. For example, 5 ha × 0.01 = 0.05 km².
How do I convert square kilometers to hectares?
Multiply the value in square kilometers by 100, or divide by 0.01. Use the swap button on the converter above to reverse the direction.
Is the hectare to square kilometer conversion exact?
Yes. Area conversions derive from the exact 1959 international definitions of the meter, yard, and foot, so the factors are exact.
What is the formula for hectares to square kilometers?
The formula is: km² = ha × 0.01. This comes from the definition of both units relative to the square meter.