Convert Square Foot to Dunam (Ottoman)
Convert square feet to dunams instantly. 1 square foot = 6.944464e-5 dunam (ottoman) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Dunam (Ottoman) to Square Foot converter for the reverse conversion.
Units explained
Square Foot
A square foot is an imperial unit of area equal to exactly 0.09290304 m². It is the dominant unit for real estate area measurement in the United States and is widely used in India for residential property listings.
Derived by squaring the foot. The foot was standardized to exactly 0.3048 m via the 1959 International Yard and Pound Agreement.
Square feet are the standard unit for US real estate floor area, HVAC capacity ratings (BTU per ft²), commercial leasing, and construction. In India, square feet is the dominant unit for residential property advertisements alongside traditional regional units.
Foot dates to ancient civilizations; modern exact value standardized in 1959.
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Traditional Ottoman unit; largely superseded by metric dunam.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 Foot to Dunam (Ottoman) conversion formula
The relationship between square feet and dunams:
To convert square feet to dunams, multiply the value in square feet by 6.944464e-5. To reverse, multiply dunams by 14399.9593554743.
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 Foot converter for the reverse direction.
Step-by-step: convert square feet to dunams
- Write down the value in square feet (ft²).
- Multiply that value by the factor 6.944464e-5.
- The product is the equivalent value in dunams (dunam).
- To reverse, multiply the dunam (ottoman) value by 14399.9593554743.
Worked examples
Example 1 — Convert 1 ft² to dunam:
1 × 6.944464e-5 = 6.944464e-5 dunam
Example 2 — Convert 100 ft² to dunam:
100 × 6.944464e-5 = 0.006944464 dunam
Real-world example — Architectural to geographic scale
A 100,000-square foot measurement equals one dunam (ottoman). The five-order-of-magnitude scale change comes up in mapping work where architectural site plans must be related to road-network maps.
100000 ft² × 6.944464e-5 = 6.9444640454 dunam
Real-world example — Small to geographic-scale
100,000 square feet equals one dunam (ottoman) — a useful conversion when small-scale survey diagrams must be related to road-network distances on a different map.
100000 ft² × 6.944464e-5 = 6.9444640454 dunam
Square Foot to Dunam (Ottoman) conversion table
Standard reference values for converting square feet to dunams:
| Square Foot [ft²] | Dunam (Ottoman) [dunam] |
|---|---|
| 0.01 | 6.944464e-7 |
| 0.1 | 6.944464e-6 |
| 1 | 6.944464e-5 |
| 2 | 0.0001388893 |
| 3 | 0.0002083339 |
| 4 | 0.0002777786 |
| 5 | 0.0003472232 |
| 10 | 0.0006944464 |
| 20 | 0.0013888928 |
| 30 | 0.0020833392 |
| 40 | 0.0027777856 |
| 50 | 0.003472232 |
| 100 | 0.006944464 |
| 500 | 0.0347223202 |
| 1000 | 0.0694446405 |
Frequently asked questions
How many dunams is 1 square foot?
How do I convert square feet to dunams?
How do I convert dunams back to square feet?
How many dunams is 100 square feet?
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Metric / SI (16 units)
Imperial / US Customary (14 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 ft² = 6.944464e-5 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.