It's about 30,000 times as heavy as a Compact disc
In other words, 420 kilograms is 28,000 times the weight of a Compact disc, and the weight of a Compact disc is 0.000036 times that amount.(a.k.a. CD)
A compact disc typically weighs 0.015 kilograms. Data is stored on CDs by encoding into the track a series of tiny pits — each between 3.5 and 850 µm (0.00014 and 0.033 in) in length.
It's about one-thirty-thousandth as heavy as The Brooklyn Bridge
In other words, 420 kilograms is 0.00003153 times the weight of The Brooklyn Bridge, and the weight of The Brooklyn Bridge is 31,720 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 13,320,000 kilograms. 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 35,000 times as heavy as a Battery (AAA)
In other words, 420 kilograms is 35,000 times the weight of a Battery (AAA), and the weight of a Battery (AAA) is 0.000029 times that amount.(Alkaline)
An "AAA" size battery weighs 0.012 kilograms. Batteries are named by the American National Standards Institute (ANSI) Committee C18 and AAA batteries were given their name because they were smaller than the "AA" and "A" size batteries which were invented first.
It's about one-sixty-thousandth as heavy as The Statue of Liberty
In other words, 420 kilograms is 0.000017 times the weight of The Statue of Liberty, and the weight of The Statue of Liberty is 58,800 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, including her base is roughly 24,600,000 kilograms. 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 60,000 times as heavy as an Eye (Human)
In other words, 420 kilograms is 59,000 times the weight of an Eye (Human), and the weight of an Eye (Human) is 0.000017 times that amount.(adult)
A fully developed eye (in a person over the age of thirteen), weighs about 0.0071 kilograms. The pupil of the eye varies depending on the amount of light it is exposed to, but typically measures about 4 mm across.
It's about 75,000 times as heavy as a Quarter
In other words, 420 kilograms is 74,070 times the weight of a Quarter, and the weight of a Quarter is 0.0000135 times that amount.(United States quarter-dollar coin) (a.k.a. Quarter dollar, a.k.a. America the Beautiful quarter, a.k.a. two bits)
The America the Beautiful series quarters, which began to enter circulation in 2017, weigh 0.00567 kilograms each. In answer to the common riddle, there are 119 ridges around the edge of the coin in its current design.
It's about 85,000 times as heavy as a sheet of Paper
In other words, 420 kilograms is 84,000 times the weight of a sheet of Paper, and the weight of a sheet of Paper is 0.000012 times that amount.(for US Letter, a.k.a. ANSI A; 215.9mm by 279.4mm (8.5 in x 11 in); 20lb)
The weight of a ream (500 sheets) of 9.10 kilograms, 8.5 inch x 11 inch paper is 2 kg, each sheet weighing 0.005 kilograms. Paper of this size has a thickness of 0.004 caliper (0.1 mm).