Convert Feddan to Acre
Convert feddans to acres instantly. 1 feddan = 1.0380476996 acre — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Acre 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.
Acre
An acre is an imperial unit of area equal to exactly 4046.8564224 m². It is the most widely used non-metric unit for land area, particularly in the US, UK, and India.
Originally defined in medieval England as the area one yoke of oxen could plow in a day, approximately 40 perches by 4 perches. Standardized via the 1959 International Yard and Pound Agreement.
Acres are the standard land measurement unit in the US (real estate, agriculture), the UK (rural property), and widely used in India (alongside hectares and traditional regional units). 1 acre = 4840 sq yd = 43,560 sq ft = 0.4047 hectare.
Medieval English farming origin; modern exact value standardized in 1959.
Feddan to Acre conversion formula
The relationship between feddans and acres:
To convert feddans to acres, multiply the value in feddans by 1.0380476996. To reverse, multiply acres by 0.9633468677.
How to use this converter
Type a value into the calculator. The result in acres updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Acre to Feddan converter for the reverse direction.
Step-by-step: convert feddans to acres
- Write down the value in feddans (feddan).
- Multiply that value by the factor 1.0380476996.
- The product is the equivalent value in acres (ac).
- To reverse, multiply the acre value by 0.9633468677.
Worked examples
Example 1 — Convert 1 feddan to ac:
1 × 1.0380476996 = 1.0380476996 ac
Example 2 — Convert 100 feddan to ac:
100 × 1.0380476996 = 103.8047699629 ac
Real-world example — Endurance race distances
A 50-feddan cycling or running race converts to a recognizable distance in acres. Endurance athletes coming from a different measurement system use this conversion to compare training plans across regions.
50 feddan × 1.0380476996 = 51.9023849814 ac
Real-world example — Maritime exclusion zone
A 200-feddan exclusion zone (a common maritime boundary) converts to a different value in acres that's useful when describing the same zone in everyday land-distance units.
200 feddan × 1.0380476996 = 207.6095399257 ac
Real-world example — Coastal cruise distances
A 10-feddan coastal sailing route converts to a different value in acres — useful for cruise operators who switch between maritime, aviation, and road-distance units depending on the leg of the trip.
10 feddan × 1.0380476996 = 10.3804769963 ac
Feddan to Acre conversion table
Standard reference values for converting feddans to acres:
| Feddan [feddan] | Acre [ac] |
|---|---|
| 0.01 | 0.010380477 |
| 0.1 | 0.10380477 |
| 1 | 1.0380476996 |
| 2 | 2.0760953993 |
| 3 | 3.1141430989 |
| 4 | 4.1521907985 |
| 5 | 5.1902384981 |
| 10 | 10.3804769963 |
| 20 | 20.7609539926 |
| 30 | 31.1414309889 |
| 40 | 41.5219079851 |
| 50 | 51.9023849814 |
| 100 | 103.8047699629 |
| 500 | 519.0238498144 |
| 1000 | 1038.0476996287 |
Frequently asked questions
How many acres is 1 feddan?
How do I convert feddans to acres?
How do I convert acres back to feddans?
How many acres is 100 feddans?
Popular area unit conversions
Convert Feddan to other area units
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Metric / SI (5 units)
Imperial / US Customary (3 units)
Sources & references
Conversion factor (1 feddan = 1.0380476996 ac) 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.