Hectare to Decare Converter
Area · unit-converter
Convert Hectare to Decare with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations use square-meter-based definitions (international feet / yard standards, acre, hectare, and regional units like pyeong/tsubo).
Calculator
From: Hectare (ha)
To: Decare (daa)
About Hectare
The hectare is 10,000 square meters (100 m × 100 m). It is widely used for farmland, forests, and land registration outside the US.
About Decare
The decare equals 1,000 m² (10 ares). It is used in agriculture and land records in parts of Europe and the Middle East.
How to convert hectares to decares
1 hectare is equal to 10 decare:
1 ha = (10000 m² ÷ 1000 m²) daa = 10 daa
Each hectare is defined as 10000 m² and each decare as 1000 m², so one ha equals 10000 ÷ 1000 daa = 10 daa.
Let a(ha) be the numeric value of the same area measured in Hectare (ha), and a(daa) the value in Decare (daa). Then:
a(daa) = a(ha) × (10000 / 1000)
Equivalently, divide by how many ha fit into one daa (m² per daa divided by m² per ha):
a(daa) = a(ha) ÷ 0.1
Or: decare = hectare ÷ 0.1
Examples
Example #1: Convert 20 ha to decare
20 ha = 20 ha × (10000/1000) daa = 200 daa
20 ha = 20 ha ÷ 0.1 = 200 daa
Example #2: Convert 50 ha to decare
50 ha = 50 ha × (10000/1000) daa = 500 daa
50 ha = 50 ha ÷ 0.1 = 500 daa
Summary
To convert Hectare to Decare, multiply the value in ha by the ratio of square meters per ha divided by square meters per daa. Equivalently: value_daa = value_ha × (10000 / 1000). Numerically, 1 ha equals 10 daa.
Relationship context
Both units are metric (SI) and tied to the square meter. Conversions use exact ratios from their m² definitions. The factor from Hectare to Decare is 1.000000e+1 (1 ha = 10 daa).
Conversion tables
| Hectare (ha) | Decare (daa) |
|---|---|
| 0.1 | 1 |
| 1 | 10 |
| 2 | 20 |
| 3 | 30 |
| 4 | 40 |
| 5 | 50 |
| 6 | 60 |
| 7 | 70 |
| 8 | 80 |
| 9 | 90 |
| Hectare (ha) | Decare (daa) |
|---|---|
| 10 | 100 |
| 20 | 200 |
| 30 | 300 |
| 40 | 400 |
| 50 | 500 |
| 60 | 600 |
| 70 | 700 |
| 80 | 800 |
| 90 | 900 |
| 100 | 1,000 |