It's about 0.0000001 times as big as Russia.
In other words, 500 feddans is 0.0000001228440 times the size of Russia, and the size of Russia is 8,140,405.70 times that amount.(a.k.a Российская Федерация, formally the Russian Federation, a.k.a. Россия)
The largest country in the world, Russia measures 4,070,202,700 feddans. Russia spans eleven time zones and holds more forest than any other country in the world, as well as lakes and rivers containing totaling 25% of the world's fresh water supply.
It's about 20,000,000 times as big as an Airplane Tray Table.
In other words, 500 feddans is 20,800,000 times the size of an Airplane Tray Table, and the size of an Airplane Tray Table is 0.00000004810 times that amount.(average)
With wide variation among different models of airplanes, in-flight tray tables measure around 41.2 cm (16.5 in) x 24.1 cm (9.5 in) for a total area of 0.0000240 feddans. Flight safety rules require that the tray tables be upright and locked during takeoff and landing so as to reduce the risk of passenger abdominal injury.
It's about 50,000,000 times as big as an Apple iPad.
In other words, 500 feddans is 52,480,000 times the size of an Apple iPad, and the size of an Apple iPad is 0.000000019050 times that amount.(for 9.7 inch, Apple iPad Air MD785LL/B)
An Apple iPad measures 23 cm (9.4 in) x 17 cm (6.6 in) for a total device area of 0.0000095270 feddans. The base model iPad Air features 16 GB of storage capacity.
It's about 0.00000002 times as big as The Land area of Earth.
In other words, 500 feddans is 0.0000000141020 times the size of The Land area of Earth, and the size of The Land area of Earth is 70,912,000 times that amount.The Earth has a land area of 35,455,000,000 feddans. Only an estimated one-eighth of this area — or 4,432,000,000 feddans — is inhabitable by humans, with uninhabitable terrain such as deserts and high mountains covering the rest.
It's about 400,000,000 times as big as a Playing Card.
In other words, 500 feddans is 380,000,000 times the size of a Playing Card, and the size of a Playing Card is 0.00000000260 times that amount.(ISO 216 B8 size)
A single ISO 216 B8-size playing card measures 0.00000130 feddans. Although this size is the most common playing card, many casinos use the smaller "bridge size" card — 0.000000630 feddans smaller.
It's about 400,000,000 times as big as a Post-it® Note (3M).
In other words, 500 feddans is 390,000,000 times the size of a Post-it® Note (3M), and the size of a Post-it® Note (3M) is 0.00000000260 times that amount.(3M) (generically sticky notes, a.k.a. repositionable notes, a.k.a. repositional notes)
A Post-it® Note measures 0.00000130 feddans in total area. In September, 1989, Hurricane Hugo swept through Charleston, South Carolina with winds up to 230 kph (140 mph), uprooting eight oak trees in Mr. Bruce Brakefield's yard, but leaving in place a Post-it® note attached to his front door.
It's about 2,500,000,000 times as big as a Secure Digital (SD) card.