It's about 0.00000010 times as heavy as The Eiffel Tower.
In other words, 643.0329 pennyweights is 0.0000000990 times the weight of The Eiffel Tower, and the weight of The Eiffel Tower is 10,100,000 times that amount.(a.k.a. La Tour Eiffel) (Paris, France) (total weight)
The Eiffel Tower weighs approximately 6,490,000,000 pennyweights. Architected to be quickly assembled, the Tower contains only 7.5 cu. m (260 cu. ft) of solid material.
It's about 0.00000008 times as heavy as The Brooklyn Bridge.
In other words, 643.0329 pennyweights is 0.000000075080 times the weight of The Brooklyn Bridge, and the weight of The Brooklyn Bridge is 13,320,000 times that amount.(a.k.a. New York and Brooklyn Bridge) (Manhattan and Brooklyn, New York City, New York) (total weight)
The total weight of the Brooklyn Bridge is approximately 8,565,000,000 pennyweights. In a promotional event to prove the bridge's stability shortly after it opened, entertainer P. T. Barnum led a parade of 21 elephants across it in May of 1884.
It's about 15,000,000 times as heavy as a Grain of Salt.
In other words, 643.0329 pennyweights is 17,100,000 times the weight of a Grain of Salt, and the weight of a Grain of Salt is 0.00000005850 times that amount.The mass of a grain of salt is approximately 0.00003760 pennyweights. Salt consumption varies widely by country; the people of the United States consume a combined total of about 1,750,000,000 pennyweights of salt each year.
It's about 0.00000004 times as heavy as The Statue of Liberty.
In other words, 643.0329 pennyweights is 0.0000000410 times the weight of The Statue of Liberty, and the weight of The Statue of Liberty is 24,000,000 times that amount.(a.k.a. Liberty Enlightening the World, a.k.a. La Liberté éclairant le monde) (total weight, including foundation)
The total weight of the Statue of Liberty is roughly 16,000,000,000 pennyweights. The statue was designed using an optical trick known as "forced perspective" to make the statue appear proportionally correct when viewed from its base and is, in actuality, disproportionately large at the top.
It's about 0.000000009 times as heavy as The CN Tower.
In other words, 643.0329 pennyweights is 0.00000000848130 times the weight of The CN Tower, and the weight of The CN Tower is 117,910,000 times that amount.(a.k.a. La Tour CN, a.k.a. Canadian National Tower, a.k.a. Canada's National Tower) (Toronto, Canada)
The CN Tower weighs approximately 75,818,000,000 pennyweights. The Tower is home to the world's highest glass floor — a viewing area that allows visitors to look straight down 342 m (1,120 ft) to the ground below.
It's about 0.000000005 times as heavy as The Sears Tower.
In other words, 643.0329 pennyweights is 0.0000000049560 times the weight of The Sears Tower, and the weight of The Sears Tower is 201,800,000 times that amount.(officially "Willis Tower" as of 2009) (Chicago, Illinois)
The Willis Tower weighs approximately 129,800,000,000 pennyweights. The outer wall surface of the Tower is covered with black anodized aluminum panels which would total 110,000 sq. m (28 acres) if laid out together.
It's about 0.000000003 times as heavy as The Empire State Building.
In other words, 643.0329 pennyweights is 0.000000003020 times the weight of The Empire State Building, and the weight of The Empire State Building is 331,000,000 times that amount.(New York City, New York)
The Empire State Building weighs approximately 213,000,000,000 pennyweights. About 4% of the building's weight is its 6,000 cu. m (200,000 cu. ft) of limestone façade.