It's about 300 times as heavy as a Gold Bar
In other words, 4,000 kilograms is 321.5074657 times the weight of a Gold Bar, and the weight of a Gold Bar is 0.0031103477 times that amount.(London Good Delivery bar)
A "London Good Delivery" gold bar — the variety commonly held by Central Banks — should weigh 12.44139072 kg (400 troy oz). The largest gold bar ever produced was minted by Mitsubishi Materials Corporation (a sibling company of the auto manufacturer) in 2005 and weighed 250 kg.
It's about one-three-hundredth as heavy as a Tree (Sierra Redwood)
In other words, 4,000 kilograms is 0.003 times the weight of a Tree (Sierra Redwood), and the weight of a Tree (Sierra Redwood) is 320 times that amount.(a.k.a. Giant Sequoia, a.k.a. Sierran redwood, a.k.a. Wellingtonia, a.k.a. "Big Tree", Sequoiadendron giganteum)
The weight of wood in a Giant Sequoia is 1,300,000 kilograms. General Sherman, a specimen in Sequoia National Park in Visalia, California, is the largest tree in the world by volume, with an estimated weight of about 1,900,000 kilograms.
It's about 400 times as heavy as a Dachshund
In other words, 4,000 kilograms is 400 times the weight of a Dachshund, and the weight of a Dachshund is 0.00 times that amount.(a.k.a. "Wiener dog", a.k.a. Teckel, a.k.a. Dackel, a.k.a. "hot dog dog", a.k.a. "sausage dog", a.k.a. "doxie") (FCI standard; standard size)
The Fédération Cynologique Internationale (FCI) calls for dachshunds to weigh about 9 kg. Despite of their small size, a 2008 survey conducted by the University of Pennsylvania named dachshunds as the most aggressive dog breed.
It's about 600 times as heavy as a Bowling Ball
In other words, 4,000 kilograms is 587.899366 times the weight of a Bowling Ball, and the weight of a Bowling Ball is 0.0017009714 times that amount.(most common selection among male bowlers)
With an allowable range of 4.989516070 kilograms, the most-preferred bowling ball weight among adult, male bowlers is 6.803885550 kilograms. Because regulation balls measure the same diameter irrespective of their weight, ball density varies by size and balls weighing less than about 5 kg (11 lbs) will float in water.
It's about 800 times as heavy as a Gallon of Paint
It's about 900 times as heavy as a Cat
In other words, 4,000 kilograms is 900 times the weight of a Cat, and the weight of a Cat is 0.00 times that amount.(Felis catus) (Domestic; healthy weight)
The average domestic cat should weigh about 4.5 kg. Cats are known for their righting reflex, which allows them to land on their feet and survive falls from heights of 1 m up to about 21 m.
It's about 1,500 times as heavy as a Brick
In other words, 4,000 kilograms is 1,400 times the weight of a Brick, and the weight of a Brick is 0.0007 times that amount.(Standard, traditional face brick - 1,900 cu. cm (120 cu. in))
A standard, traditional face brick weighs an average of 2.9 kg. The steeple of the Church of St. Martin in Landshut, Germany is said to be the tallest brick tower in the world at a height of 130.6 m (428.5 ft) and was constructed using an estimated 650,000 bricks.