Convert Hectare to Dunam (Metric)
Convert hectares to dunams instantly. 1 hectare = 10 dunam (metric) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Dunam (Metric) to Hectare converter for the reverse conversion.
Units explained
Hectare
A hectare is a metric unit of area equal to 10,000 square meters, or one square hectometer. It is the most widely used metric unit for land measurement worldwide.
Defined as 100 ares, equal to one square hectometer. The name was introduced in 1795 in France as part of the metric system.
Hectares are the standard unit for agricultural land measurement worldwide except in the US (which uses acres). 1 hectare equals 2.47105 acres. In India, hectares are used in modern agricultural census and land records alongside traditional regional units.
Adopted in France in 1795; standardized internationally through the SI system.
Dunam (Metric)
A metric dunam is a unit of land area equal to exactly 1000 m² (0.1 hectare or about 0.247 acre). Used widely in Israel, Turkey, and the Middle East.
Originally an Ottoman unit of variable size (see Ottoman dunam). The metric dunam was standardized at exactly 1000 m² in the 20th century for ease of conversion.
Metric dunams are the standard land measurement unit in Israel for both residential and agricultural property. Also widely used in Turkey, Cyprus, and other former Ottoman territories.
Standardized at 1000 m² in 20th century; Ottoman origin.
Hectare to Dunam (Metric) conversion formula
The relationship between hectares and dunams:
To convert hectares to dunams, multiply the value in hectares by 10. To reverse, multiply dunams by 0.1.
How to use this converter
Type a value into the calculator. The result in dunams updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Dunam (Metric) to Hectare converter for the reverse direction.
Step-by-step: convert hectares to dunams
- Write down the value in hectares (ha).
- Multiply that value by the factor 10.
- The product is the equivalent value in dunams (dunam).
- To reverse, multiply the dunam (metric) value by 0.1.
Worked examples
Example 1 — Convert 1 ha to dunam:
1 × 10 = 10 dunam
Example 2 — Convert 100 ha to dunam:
100 × 10 = 1000 dunam
Real-world example — Coastal cruise distances
A 10-hectare coastal sailing route converts to a different value in dunams — useful for cruise operators who switch between maritime, aviation, and road-distance units depending on the leg of the trip.
10 ha × 10 = 100 dunam
Real-world example — Road-sign distances across systems
A 100-hectare road sign converts cleanly into dunams — exactly the conversion drivers planning trips abroad rely on when reading road signs in a different measurement system.
100 ha × 10 = 1000 dunam
Real-world example — Endurance race distances
A 50-hectare cycling or running race converts to a recognizable distance in dunams. Endurance athletes coming from a different measurement system use this conversion to compare training plans across regions.
50 ha × 10 = 500 dunam
Hectare to Dunam (Metric) conversion table
Standard reference values for converting hectares to dunams:
| Hectare [ha] | Dunam (Metric) [dunam] |
|---|---|
| 0.01 | 0.1 |
| 0.1 | 1 |
| 1 | 10 |
| 2 | 20 |
| 3 | 30 |
| 4 | 40 |
| 5 | 50 |
| 10 | 100 |
| 20 | 200 |
| 30 | 300 |
| 40 | 400 |
| 50 | 500 |
| 100 | 1000 |
| 500 | 5000 |
| 1000 | 10000 |
Frequently asked questions
How many dunams is 1 hectare?
How do I convert hectares to dunams?
How do I convert dunams back to hectares?
How many dunams is 100 hectares?
Popular area unit conversions
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Metric / SI (15 units)
Imperial / US Customary (15 units)
US Survey (5 units)
Indian Subcontinent (16 units)
Other Regional (10 units)
Scientific / Physics (5 units)
Historical / Pre-metric European (6 units)
Sources & references
Conversion factor (1 ha = 10 dunam) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.