Convert between Hectare (ha) and Square Hectometer (hm²) — note they are equivalent units for measuring land area, used in agriculture, real estate, and geography.
Key Equivalence:
1 Hectare (ha) = 1 Square Hectometer (hm²) = 10,000 Square Meters (m²)
ha → hm²: Value remains the same | hm² → ha: Value remains the same
Accepts decimal values (e.g., 2.5 ha = 2.5 hm²)
Display format:
Quick conversions - click to auto-fill (values are equal):
Learn about equivalent area units? Share this tool with others:
Two identical area units with different names—used interchangeably for land measurement globally
Common land areas shown in both units (values are identical):
| Land Type | Hectares (ha) | Square Hectometers (hm²) | Square Meters (m²) |
|---|---|---|---|
| Small backyard garden | 0.05–0.1 ha | 0.05–0.1 hm² | 500–1,000 m² |
| Standard football field | ~0.714 ha | ~0.714 hm² | ~7,140 m² |
| Small family farm (crop) | 5–20 ha | 5–20 hm² | 50,000–200,000 m² |
| City park (medium-sized) | 20–50 ha | 20–50 hm² | 200,000–500,000 m² |
| Large agricultural estate | 100–1,000 ha | 100–1,000 hm² | 1,000,000–10,000,000 m² |
Values are identical—use this table to confirm the equivalence for common land areas
| Hectares (ha) | = | Square Hectometers (hm²) | Practical Land Context |
|---|---|---|---|
| 0.01 ha | = | 0.01 hm² | Small urban plot (100 m²) |
| 0.1 ha | = | 0.1 hm² | Large backyard or small community garden |
| 0.5 ha | = | 0.5 hm² | Half a football field (≈0.714 ha) |
| 1 ha | = | 1 hm² | 1.4 football fields, small farm plot |
| 5 ha | = | 5 hm² | Small family farm (50,000 m²) |
| 10 ha | = | 10 hm² | Large agricultural field, small park |
| 100 ha | = | 100 hm² | Large estate or nature reserve (1 km² = 100 ha) |
Key note: 1 ha = 1 hm² (values are identical) | 1 ha = 10,000 m² = 0.01 km²
Common questions about Hectares and Square Hectometers
The equivalence comes from their shared definition based on the metric system:
1 hectometer (hm) = 100 meters (m)
1 Square Hectometer (hm²) = 1 hm × 1 hm = 100m × 100m = 10,000 m²
1 Hectare (ha) is defined as 10,000 m² (the same as 1 hm²)
Conclusion: 1 ha = 1 hm² (exact equivalence, no conversion needed)
The two names exist for convenience: "hectare" is simpler for daily use, while "square hectometer" follows the metric system’s logical "square [length unit]" naming.
Use Hectares (ha) for:
Use Square Hectometers (hm²) for:
Both units (ha = hm²) convert to other common area units as follows:
1 ha = 1 hm² = 10,000 square meters (m²)
1 ha = 1 hm² = 0.01 square kilometers (km²) (1 km² = 100 ha)
1 ha = 1 hm² ≈ 2.471 acres (US customary unit)
1 ha = 1 hm² ≈ 0.003861 square miles (mi²)
These conversions are useful for international projects (e.g., converting a US farm’s "100 acres" to "40.47 ha" for global reports).
The US primarily uses acres (1 acre ≈ 0.4047 ha) instead of hectares due to:
Note: The US does use hectares in scientific research and international trade—just not for everyday land measurement.
No—since 1 ha = 1 hm², the conversion is instant and requires no math:
This tool is useful for confirming the equivalence, formatting values (e.g., rounding to 2 decimals), or learning about the units’ context.
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