Square Kilometers to Hectares
Convert square kilometers to hectares instantly — one square kilometer is 100 hectares.
| Square Kilometers | Hectares |
|---|---|
| 1 km² | 100 ha |
| 2 km² | 200 ha |
| 3 km² | 300 ha |
| 5 km² | 500 ha |
| 10 km² | 1000 ha |
| 25 km² | 2500 ha |
| 50 km² | 5000 ha |
| 100 km² | 10000 ha |
How to use
- Enter a value in the Square Kilometers field.
- The Hectares figure appears immediately — no button to press.
- Typing in the Hectares field converts back to Square Kilometers the same way.
- Use the reference table for the values that come up most often.
Square Kilometers to Hectares formula
The factor from square kilometers to hectares is 100.
ha = km² × 100
Put another way, one square kilometer is exactly 100 hectares.
Why this factor: the square kilometer and the hectare are both defined against the square meter, so dividing one definition by the other gives 100 directly. Both definitions are set out in full below.
To go the other way, divide by 100 — or use the Hectares to Square Kilometers converter, which is the same calculation reversed.
Worked example
Given 1000 km², multiplying by 100 yields 100000 ha.
1000 km² × 100 = 100000 ha
The converter above does this for any value you type, in either direction.
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.
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.
Square Kilometers vs Hectares
The square kilometer and the hectare 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 hectares are in a square kilometer?
One square kilometer equals 100 hectares.
What is the formula to convert square kilometers to hectares?
Multiply the number of square kilometers by 100. To reverse it, divide by 100 instead.
How do I convert hectares back to square kilometers?
Divide by 100, which is the same as multiplying by 0.01.
How many hectares are in 10 square kilometers?
10 km² works out to 1000 ha.
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 square kilometer defined?
Exactly 1×10⁶ square meters. Note it is the kilometer that is squared, not the prefix applied to a square meter.