Convert Feddan to Square Kilometer
Convert feddans to square kilometers instantly. 1 feddan = 0.00420083 square kilometer — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Square Kilometer to Feddan converter for the reverse conversion.
Units explained
Feddan
A feddan is an Egyptian unit of land area equal to approximately 4200.83 m² (about 1.038 acres). Used in Egypt, Sudan, Syria, and Oman.
Originated as an Egyptian agricultural unit. Standardized at 4200.83 m² in modern Egyptian law (specifically, 333.33 qasaba squared).
Feddans are the primary unit for agricultural land in Egypt and several Arab countries. The conversion to hectares (1 feddan ≈ 0.42 hectare) is widely known regionally.
Standardized in modern Egyptian land law.
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.
Feddan to Square Kilometer conversion formula
The relationship between feddans and square kilometers:
To convert feddans to square kilometers, multiply the value in feddans by 0.00420083. To reverse, multiply square kilometers by 238.0481952376.
How to use this converter
Type a value into the calculator. The result in square kilometers 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 Kilometer to Feddan converter for the reverse direction.
Step-by-step: convert feddans to square kilometers
- Write down the value in feddans (feddan).
- Multiply that value by the factor 0.00420083.
- The product is the equivalent value in square kilometers (km²).
- To reverse, multiply the square kilometer value by 238.0481952376.
Worked examples
Example 1 — Convert 1 feddan to km²:
1 × 0.00420083 = 0.00420083 km²
Example 2 — Convert 100 feddan to km²:
100 × 0.00420083 = 0.420083 km²
Real-world example — Endurance race distances
A 50-feddan cycling or running race converts to a recognizable distance in square kilometers. Endurance athletes coming from a different measurement system use this conversion to compare training plans across regions.
50 feddan × 0.00420083 = 0.2100415 km²
Real-world example — Maritime exclusion zone
A 200-feddan exclusion zone (a common maritime boundary) converts to a different value in square kilometers that's useful when describing the same zone in everyday land-distance units.
200 feddan × 0.00420083 = 0.840166 km²
Real-world example — Coastal cruise distances
A 10-feddan coastal sailing route converts to a different value in square kilometers — useful for cruise operators who switch between maritime, aviation, and road-distance units depending on the leg of the trip.
10 feddan × 0.00420083 = 0.0420083 km²
Feddan to Square Kilometer conversion table
Standard reference values for converting feddans to square kilometers:
| Feddan [feddan] | Square Kilometer [km²] |
|---|---|
| 0.01 | 4.20083e-5 |
| 0.1 | 0.000420083 |
| 1 | 0.00420083 |
| 2 | 0.00840166 |
| 3 | 0.01260249 |
| 4 | 0.01680332 |
| 5 | 0.02100415 |
| 10 | 0.0420083 |
| 20 | 0.0840166 |
| 30 | 0.1260249 |
| 40 | 0.1680332 |
| 50 | 0.2100415 |
| 100 | 0.420083 |
| 500 | 2.100415 |
| 1000 | 4.20083 |
Frequently asked questions
How many square kilometers is 1 feddan?
How do I convert feddans to square kilometers?
How do I convert square kilometers back to feddans?
How many square kilometers is 100 feddans?
Popular area unit conversions
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Metric / SI (5 units)
Imperial / US Customary (3 units)
Sources & references
Conversion factor (1 feddan = 0.00420083 km²) 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.