It's about 2,000 times as heavy as a Chihuahua
In other words, 4,000 kilograms is 1,780 times the weight of a Chihuahua, and the weight of a Chihuahua is 0.00056 times that amount.(a.k.a. Chihuahue(o) (FCI standard)
The F&d&ration Cynologique Internationale (FCI) calls for Chihuahuas to weigh about 1.5 to 3 kg. Relative to their body sizes, Chihuahuas have the largest brain size of any dog breed.
It's about one-two-thousand-five-hundredth as heavy as The Eiffel Tower
In other words, 4,000 kilograms is 0.00040 times the weight of The Eiffel Tower, and the weight of The Eiffel Tower is 2,530 times that amount.(a.k.a. La Tour Eiffel) (Paris, France) (total weight)
The Eiffel Tower weighs approximately 10,100,000 kilograms. Architected to be quickly assembled, the Tower contains only 930 cu. meters of solid material.
It's about 3,000 times as heavy as a Human Brain
In other words, 4,000 kilograms is 2,960 times the weight of a Human Brain, and the weight of a Human Brain is 0.00034 times that amount.(adult)
The average weight of an adult human brain is between 1.350 kilograms. In humans and primates, sight and vision utilize about 30 different parts of the brain which together account for about half of the brain's size.
It's about one-three-thousand-five-hundredth as heavy as The Brooklyn Bridge
In other words, 4,000 kilograms is 0.000300 times the weight of The Brooklyn Bridge, and the weight of The Brooklyn Bridge is 3,330 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 4,000 times as heavy as a liter of Water
In other words, 4,000 kilograms is 3,999.888 times the weight of a liter of Water, and the weight of a liter of Water is 0.00025001 times that amount.(fresh; 4° C / 39.2° F; maximum density)
Contrary to popular belief, 1 liter (0.0.264172052358148 gal) of water at 4° C / 39.2° F (its point of maximum density) weighs 1.000028 kg rather than 1 kg exactly. The total volume of water on the planet Earth is about 13,590,000,000,000,000,000 (13.59 quntillion) L (3,590,000,000,000,000,000 gallons).
It's about one-six-thousandth as heavy as The Statue of Liberty
In other words, 4,000 kilograms is 0.00016 times the weight of The Statue of Liberty, and the weight of The Statue of Liberty is 6,170 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 6,500 times as heavy as a Basketball
In other words, 4,000 kilograms is 6,413.4476272 times the weight of a Basketball, and the weight of a Basketball is 0.0001559223772 times that amount.(NBA official ball standards, Size 7)
A regulation NBA basketball, manufactured by Spalding, is known as a Size 7 ball and weighs 0.623689508750 kilograms. These balls have 4,118 pebbles each with a diameter of 2.5 mm