Decare to Hectare Converter
Area · unit-converter
Convert Decare to Hectare 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: Decare (daa)
To: Hectare (ha)
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.
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.
How to convert decares to hectares
1 decare is equal to 0.1 hectare:
1 daa = (1000 m² ÷ 10000 m²) ha = 0.1 ha
Each decare is defined as 1000 m² and each hectare as 10000 m², so one daa equals 1000 ÷ 10000 ha = 0.1 ha.
Let a(daa) be the numeric value of the same area measured in Decare (daa), and a(ha) the value in Hectare (ha). Then:
a(ha) = a(daa) × (1000 / 10000)
Equivalently, divide by how many daa fit into one ha (m² per ha divided by m² per daa):
a(ha) = a(daa) ÷ 10
Or: hectare = decare ÷ 10
Examples
Example #1: Convert 20 daa to hectare
20 daa = 20 daa × (1000/10000) ha = 2 ha
20 daa = 20 daa ÷ 10 = 2 ha
Example #2: Convert 50 daa to hectare
50 daa = 50 daa × (1000/10000) ha = 5 ha
50 daa = 50 daa ÷ 10 = 5 ha
Summary
To convert Decare to Hectare, multiply the value in daa by the ratio of square meters per daa divided by square meters per ha. Equivalently: value_ha = value_daa × (1000 / 10000). Numerically, 1 daa equals 0.1 ha.
Relationship context
Both units are metric (SI) and tied to the square meter. Conversions use exact ratios from their m² definitions. The factor from Decare to Hectare is 1.000000e-1 (1 daa = 0.1 ha).
Conversion tables
| Decare (daa) | Hectare (ha) |
|---|---|
| 0.1 | 0.01 |
| 1 | 0.1 |
| 2 | 0.2 |
| 3 | 0.3 |
| 4 | 0.4 |
| 5 | 0.5 |
| 6 | 0.6 |
| 7 | 0.7 |
| 8 | 0.8 |
| 9 | 0.9 |
| Decare (daa) | Hectare (ha) |
|---|---|
| 10 | 1 |
| 20 | 2 |
| 30 | 3 |
| 40 | 4 |
| 50 | 5 |
| 60 | 6 |
| 70 | 7 |
| 80 | 8 |
| 90 | 9 |
| 100 | 10 |