Feddan to acre converter

Using a reference feddan of 4,200 m², 1 feddan ≈ 1.037843 acres.

Convert in either direction below. If your survey document specifies a different feddan area, enter that value as the conversion basis.

Feddan to acre conversion table

This table uses 4,200 m² per feddan and the international acre. Acre results are rounded to six decimal places.

How to convert feddans into acres

Multiply the number of feddans by the square metres in one feddan, then divide by 4,046.8564224, the square metres in one international acre.

Acres = feddans × square metres per feddan ÷ 4,046.8564224.

For example, 10 feddans on the 4,200 m² basis cover 42,000 m²: 42,000 ÷ 4,046.8564224 ≈ 10.378426 acres. To convert back, multiply acres by 4,046.8564224 and divide by your feddan basis.

Which feddan definition should I use?

The default here follows the 4,200 m² reference in FAO’s published Egypt national report. It is a stated calculation assumption, not a determination of the area or legal boundaries of a particular property. Use the measurement stated in your survey or land document when it differs.

The full unit converter also includes a 4,200.83 m² Egyptian preset. Enter 4200.83 above if that is the basis specified in your document; do not mix results calculated on different bases.

Is a feddan the same as an acre?

No. On the default basis, one feddan is about 3.78% larger than one international acre. Neither unit describes the shape of a plot: the same area can have many different lengths and widths.

Sources and calculation notes

• FAO: Egypt national report, December 1991 — defines the reference feddan as 4,200 m².
• NIST: revised unit conversion factors — gives the international acre as exactly 4,046.8564224 m². This page does not use the legacy U.S. survey acre.

Source references checked 15 September 2026. This calculator converts an entered area; it does not measure land or verify a survey.

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