Convert Square Kilometer to Dunam (Ottoman)
Convert square kilometers to dunams instantly. 1 square kilometer = 747.4958887726 dunam (ottoman) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Dunam (Ottoman) to Square Kilometer converter for the reverse conversion.
Units explained
Square Kilometer
A square kilometer is a metric unit of area equal to 1,000,000 m² (one million square meters), or 100 hectares. It is used for measuring large land areas, regional geography, and country-scale statistics.
Derived by squaring the kilometer (1000 m). The kilo- prefix comes from the Greek 'chilioi' (thousand).
Square kilometers express the area of cities, districts, lakes, forests, and entire countries. India's total area is approximately 3,287,263 km². 1 km² equals 100 hectares or about 247.105 acres.
Kilometer has been part of the metric system since 1795.
Dunam (Ottoman)
An Ottoman dunam was a historical unit of area used across the Ottoman Empire, approximately 1337.8 m². The value varied somewhat by region.
Originated as the area a yoke of oxen could plow in a day, a measure used across much of the Mediterranean. Standardized in different regional ways.
Ottoman dunams appear in pre-20th-century land records across the former Ottoman Empire. Modern usage has shifted to metric dunams (exactly 1000 m²).
Traditional Ottoman unit; largely superseded by metric dunam.
Square Kilometer to Dunam (Ottoman) conversion formula
The relationship between square kilometers and dunams:
To convert square kilometers to dunams, multiply the value in square kilometers by 747.4958887726. To reverse, multiply dunams by 0.0013378.
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 (Ottoman) to Square Kilometer converter for the reverse direction.
Step-by-step: convert square kilometers to dunams
- Write down the value in square kilometers (km²).
- Multiply that value by the factor 747.4958887726.
- The product is the equivalent value in dunams (dunam).
- To reverse, multiply the dunam (ottoman) value by 0.0013378.
Worked examples
Example 1 — Convert 1 km² to dunam:
1 × 747.4958887726 = 747.4958887726 dunam
Example 2 — Convert 100 km² to dunam:
100 × 747.4958887726 = 74749.5888772612 dunam
Square Kilometer to Dunam (Ottoman) conversion table
Standard reference values for converting square kilometers to dunams:
| Square Kilometer [km²] | Dunam (Ottoman) [dunam] |
|---|---|
| 0.01 | 7.4749588877 |
| 0.1 | 74.7495888773 |
| 1 | 747.4958887726 |
| 2 | 1494.9917775452 |
| 3 | 2242.4876663178 |
| 4 | 2989.9835550904 |
| 5 | 3737.4794438631 |
| 10 | 7474.9588877261 |
| 20 | 14949.9177754522 |
| 30 | 22424.8766631784 |
| 40 | 29899.8355509045 |
| 50 | 37374.7944386306 |
| 100 | 74749.5888772612 |
| 500 | 373747.9443863059 |
| 1000 | 747495.8887726119 |
Frequently asked questions
How many dunams is 1 square kilometer?
How do I convert square kilometers to dunams?
How do I convert dunams back to square kilometers?
How many dunams is 100 square kilometers?
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)
Sources & references
Conversion factor (1 km² = 747.4958887726 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.