Hectares to Square Kilometers
Convert hectares to square kilometers instantly — one hectare is 0.01 square kilometers.
| Hectares | Square Kilometers |
|---|---|
| 1 ha | 0.01 km² |
| 2 ha | 0.02 km² |
| 3 ha | 0.03 km² |
| 5 ha | 0.05 km² |
| 10 ha | 0.1 km² |
| 25 ha | 0.25 km² |
| 50 ha | 0.5 km² |
| 100 ha | 1 km² |
How to use
- Enter a value in the Hectares field.
- The Square Kilometers figure appears immediately — no button to press.
- Typing in the Square Kilometers field converts back to Hectares the same way.
- Use the reference table for the values that come up most often.
Hectares to Square Kilometers formula
Converting hectares to square kilometers is a single multiplication by 0.01.
km² = ha × 0.01
Put another way, one hectare is exactly 1/100 of a square kilometer.
Why this factor: the hectare and the square kilometer are both defined against the square meter, so dividing one definition by the other gives 0.01 directly. Both definitions are set out in full below.
To go the other way, divide by 0.01 — or use the Square Kilometers to Hectares converter, which is the same calculation reversed.
Worked example
Given 1000 ha, multiplying by 0.01 yields 10 km².
1000 ha × 0.01 = 10 km²
The converter above does this for any value you type, in either direction.
What is a hectare?
A hectare is the standard metric unit of land area — a 100-meter square.
Definition: Exactly 10,000 square meters, which is one square hectometer.
Where it is used: Agricultural and forestry land, development sites, and land-use statistics worldwide.
Worth knowing: Roughly two and a half acres, and almost exactly the area of an international rugby pitch.
What is a square kilometer?
A square kilometer is the area of a one-kilometer square — one million square meters.
Definition: Exactly 1×10⁶ square meters. Note it is the kilometer that is squared, not the prefix applied to a square meter.
Where it is used: City, national park and country areas, population density, and land cover statistics.
Hectares vs Square Kilometers
The hectare and the square kilometer belong to the same family of units, so converting between them is usually a matter of shifting a decimal point or applying a small whole-number factor.
Frequently asked questions
How many square kilometers are in a hectare?
One hectare equals 0.01 square kilometers.
What is the formula to convert hectares to square kilometers?
Multiply the number of hectares by 0.01. To reverse it, divide by 0.01 instead.
How do I convert square kilometers back to hectares?
Divide by 0.01, which is the same as multiplying by 100.
How many square kilometers are in 10 hectares?
10 ha works out to 0.1 km².
Is there anything to watch out for with hectares?
Roughly two and a half acres, and almost exactly the area of an international rugby pitch.
How is the hectare defined?
Exactly 10,000 square meters, which is one square hectometer.