It's about one-two-thousandth as big as Nauru.
In other words, 2.5 acres is 0.00048 times the size of Nauru, and the size of Nauru is 2,100 times that amount.(a.k.a. Republic of Nauru, a.k.a. Pleasant Island)
The world's smallest island nation, Nauru is a Micronesian island with a total area of 5,200 acres. Once a prosperous phosphate mining nation with the highest per-capita income of any nation, today 90% of the population is unemployed.
It's about one-two-thousandth as big as Fort Meade.
In other words, 2.5 acres is 0.0004618 times the size of Fort Meade, and the size of Fort Meade is 2,165 times that amount.(a.k.a. Fort George G. Meade) (near Odenton, Maryland)
Fort Meade measures 5,414 acres. It is known as home of the Fort Meade Museum and the National Cryptologic Museum.
It's about 2,500 times as big as a King Size Bed.
In other words, 2.5 acres is 2,510 times the size of a King Size Bed, and the size of a King Size Bed is 0.000398 times that amount.(North American/Australian standard; length; mattress only)
A King-Size mattress measures 0.000996 acres in total area. Although most antique beds were smaller than modern beds, it was not uncommon for beds in the medieval Europe to reach 0.00124 acres for those in positions of wealth or power.
It's about one-two-thousand-five-hundredth as big as Tuvalu.
In other words, the size of Tuvalu is 2,600 times 2.5 acres.(a.k.a. Ellice Islands)
Tuvalu is a chain of islands totaling 6,400 acres in area and located midway between Hawaii and Australia, near Samoa and Fiji. It is the third-least populated nation in the world, with just 11,992 citizens and residents.
It's about one-four-thousandth as big as Rock Island.
In other words, 2.5 acres is 0.00025794 times the size of Rock Island, and the size of Rock Island is 3,876.9 times that amount.(a.k.a. Arsenal Island, a.k.a. Rock Island Arsenal) (Illinois, on the Iowa border) (land area only)
Rock Island measures 9,691.5 acres in total area. It is known as the largest government-owned weapons manufacturing arsenal in the United States and the US Army's only active foundry, as well as a former Union prison camp during the American Civil War.
It's about one-four-thousand-five-hundredth as big as The Pitcairn Islands.
In other words, the size of The Pitcairn Islands is 4,500 times 2.5 acres.(a.k.a. Pitcairn, Henderson, Ducie and Oeno Islands, a.k.a. Pitkern Ailen) (British overseas territory) (total land area)
The Pitcairn Islands are a group of four islands which have a combined area of 12,000 acres. A British overseas territory since 1838, the island is populated by the descendents of mutineers and others who traveled on the British Royal Naval Ship, HMS Bounty during her 1789-1790 voyage.
It's about one-six-thousandth as big as San Marino.
In other words, 2.5 acres is 0.00017 times the size of San Marino, and the size of San Marino is 5,900 times that amount.(a.k.a. The Most Serene Republic of San Marino, a.k.a. Serenissima Repubblica di San Marino)
an Marino is an enclave country located within the Apennine Mountains in Italy, with a total area of 15,000 acres. Established in 301 CE, San Marino is the oldest sovereign state in the world.