It's about 0.000000000003 times as big as Alaska.
In other words, 0.00403 dunams is 0.00000000000234594980 times the size of Alaska, and the size of Alaska is 426,266,580,000 times that amount.(United States)
The "Last Frontier," Alaska measures 1,717,854,300 dunams in total area. Alaska is home to over 100,000 glaciers — half of the world's total — including the Bering Glacier complex near the southeastern border of Alaska, which covers 5,830,000 dunams.
It's about 0.0000000000005 times as big as Brazil.
In other words, 0.00403 dunams is 0.00000000000047328930 times the size of Brazil, and the size of Brazil is 2,112,873,000,000 times that amount.(a.k.a. Brasil, formally the Federative Republic of Brazil, a.k.a. Rep&blica Federativa do Brasil)
Brazil measures 8,514,877,000 dunams in total area. Brazil is the world's fifth-largest country by area and eighth-largest economy (by GDP).
It's about 0.0000000000004 times as big as China.
In other words, 0.00403 dunams is 0.00000000000041992460 times the size of China, and the size of China is 2,381,380,000,000 times that amount.(a.k.a. People's Republic of China, a.k.a. 中华人民共和国, a.k.a.中華人民共和國 , a.k.a. Zhōnghuá Rénmín Gònghég) (UN mainland area figure)
Mainland China, as measured by the United Nations (excluding China's Special Administrative Regions — Hong Kong and Macau — and disputed territories such as Taiwan, Askai Chin, and the Trans-Karakoram Tract), occupies 9,596,961,000 dunams in total area . China is the the most populous country in the world and the third or fourth largest (depending on areas included in the measurement) in total area.
It's about 0.0000000000004 times as big as United States.
In other words, 0.00403 dunams is 0.00000000000041010820 times the size of United States, and the size of United States is 2,438,381,000,000 times that amount.(a.k.a. United States of America, a.k.a. America, a.k.a. USA, a.k.a. US)
The third or fourth largest country in the world (there is some dispute in how China's total area is measured), the United States measures 9,826,675,000 dunams in total area. The United States' economy is the fifth-largest in the world, comprising a quarter of nominal global GDP.
It's about 0.0000000000004 times as big as Canada.
In other words, 0.00403 dunams is 0.0000000000004036190 times the size of Canada, and the size of Canada is 2,477,580,000,000 times that amount.Canada measures 9,984,670,000 dunams in total area. It is both the second-largest country in the world and one of the most-sparsely populated, in addition to having the longest coastline of any country in the world — 243,000 km (151,000 mi).
It's about 0.0000000000003 times as big as Russia.
In other words, 0.00403 dunams is 0.000000000000235696750 times the size of Russia, and the size of Russia is 4,242,739,900,000 times that amount.(a.k.a Российская Федерация, formally the Russian Federation, a.k.a. Россия)
The largest country in the world, Russia measures 17,098,242,000 dunams. 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 0.00000000000003 times as big as The Land area of Earth.
In other words, 0.00403 dunams is 0.0000000000000270580 times the size of The Land area of Earth, and the size of The Land area of Earth is 36,958,000,000,000 times that amount.The Earth has a land area of 148,940,000,000 dunams. Only an estimated one-eighth of this area — or 18,618,000,000 dunams — is inhabitable by humans, with uninhabitable terrain such as deserts and high mountains covering the rest.