Area / km² → ha
Convert Square kilometers to Hectares
Convert surface areas in metric and international customary units. Convert Square kilometers (km²) to Hectares (ha). Find the formula, worked examples, unit definitions, and practical guidance below.
Reverse: Hectares to Square kilometers →
How to convert square kilometers to hectares
Area factors are squared length factors. Acres here use international feet, not historical US survey feet.
Use x for the value in km², b for the intermediate value in m², and y for the result in ha.
ha = km² × 1000000 ÷ 10000
Worked examples
10 km² ≈ 1000 ha
Step 1: (10 × 1000000) ≈ 10000000 m².
Step 2: 10000000 ÷ 10000 ≈ 1000 ha.20 km² ≈ 2000 ha
Step 1: (20 × 1000000) ≈ 20000000 m².
Step 2: 20000000 ÷ 10000 ≈ 2000 ha.
Results are rounded to 12 significant digits. Converting units does not increase the precision of the original measurement. Very large or small values outside JavaScript’s finite numeric range are rejected.
About Square kilometers
Square kilometers (km²) measures area under the conventions above. The base value in m² is (x × 1000000), where x is the numerical value in km². Factors shown here are rounded for display; calculations use the stored factor.
About Hectares
Hectares (ha) measures area under the conventions above. The base value in m² is (x × 10000), where x is the numerical value in ha. Factors shown here are rounded for display; calculations use the stored factor.
Definitions and sources
Keep these unit conventions consistent when using measurements in construction calculations.
Square kilometers to hectares reference table
| Square kilometers (km²) | Hectares (ha) |
|---|---|
| 1 | 100 |
| 5 | 500 |
| 10 | 1000 |
| 25 | 2500 |
| 50 | 5000 |
| 100 | 10000 |
| 1000 | 100000 |
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