Convert Dunam (Ottoman) to Square Meter
Convert dunams to square meters instantly. 1 dunam (ottoman) = 1337.8 square meter — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Square Meter to Dunam (Ottoman) converter for the reverse conversion.
Units explained
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Traditional Ottoman unit; largely superseded by metric dunam.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 Meter
A square meter is the SI base unit of area, defined as the area of a square with sides of one meter. It is the universal scientific unit for area.
Defined by squaring the meter, which was redefined in 2019 in terms of the speed of light. The meter itself was originally proposed by the French Academy of Sciences in 1791 as 1/10,000,000 of the distance from the equator to the North Pole.
Square meters are the universal SI unit for area, used in real estate (most countries outside the US/UK), construction, physics, engineering, materials science, biology, and nearly all scientific contexts worldwide.
Meter adopted as SI base unit in 1960; current exact definition via speed of light dates to 2019.
Dunam (Ottoman) to Square Meter conversion formula
The relationship between dunams and square meters:
To convert dunams to square meters, multiply the value in dunams by 1337.8. To reverse, multiply square meters by 0.0007474959.
How to use this converter
Type a value into the calculator. The result in square meters updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Square Meter to Dunam (Ottoman) converter for the reverse direction.
Step-by-step: convert dunams to square meters
- Write down the value in dunams (dunam).
- Multiply that value by the factor 1337.8.
- The product is the equivalent value in square meters (m²).
- To reverse, multiply the square meter value by 0.0007474959.
Worked examples
Example 1 — Convert 1 dunam to m²:
1 × 1337.8 = 1337.8 m²
Example 2 — Convert 100 dunam to m²:
100 × 1337.8 = 133780 m²
Real-world example — Lap pacing and route segmentation
Translating a dunam (ottoman)-scale distance into square meters is how runners, cyclists, and route planners convert top-line totals into the working segments they actually pace and execute.
1 dunam × 1337.8 = 1337.8 m²
Real-world example — Track athletics distances
A 1-dunam (ottoman) running track equals one thousand square meters. Track athletes' lap pacing converts the lap (often 400 of the smaller unit) into the fractional race distance whenever a coach reviews splits.
1 dunam × 1337.8 = 1337.8 m²
Real-world example — Geographic to human-scale conversion
One dunam (ottoman) converts to a precise number of square meters — the everyday arithmetic for navigation systems, race-distance calculations, and any context where bigger geographic units must be related to the smaller working units.
1 dunam × 1337.8 = 1337.8 m²
Dunam (Ottoman) to Square Meter conversion table
Standard reference values for converting dunams to square meters:
| Dunam (Ottoman) [dunam] | Square Meter [m²] |
|---|---|
| 0.01 | 13.378 |
| 0.1 | 133.78 |
| 1 | 1337.8 |
| 2 | 2675.6 |
| 3 | 4013.4 |
| 4 | 5351.2 |
| 5 | 6689 |
| 10 | 13378 |
| 20 | 26756 |
| 30 | 40134 |
| 40 | 53512 |
| 50 | 66890 |
| 100 | 133780 |
| 500 | 668900 |
| 1000 | 1337800 |
Frequently asked questions
How many square meters is 1 dunam (ottoman)?
How do I convert dunams to square meters?
How do I convert square meters back to dunams?
How many square meters is 100 dunams?
Popular area unit conversions
Convert Dunam (Ottoman) to other area units
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Metric / SI (5 units)
Imperial / US Customary (3 units)
Other Regional (9 units)
Sources & references
Conversion factor (1 dunam = 1337.8 m²) 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.