It's about one-three-hundredth as heavy as a Bowling Ball
In other words, 0.021 kilograms is 0.00308647167 times the weight of a Bowling Ball, and the weight of a Bowling Ball is 323.994550 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 one-five-hundredth as heavy as a Dachshund
In other words, the weight of a Dachshund is 500 times 0.021 kilograms.(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 one-six-hundredth as heavy as a Gold Bar
In other words, 0.021 kilograms is 0.001687914195 times the weight of a Gold Bar, and the weight of a Gold Bar is 592.44717710 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 1,000 times as heavy as a Grain of Rice
In other words, the weight of a Grain of Rice is 0.001 times 0.021 kilograms.(conventional; US; long-, medium-, and short-gran varieties; uncooked)
With great differences in variety, the average among a sampling of common short-, medium- and long-grain rices finds that a single grain weighs about 0.0000210 kilograms before cooking. A staple through most of human history, archaeological evidence indicates that the earliest rice cultivation was about 11,500 years ago.
It's about one-one-thousand-five-hundredth as heavy as a Dalmatian
In other words, 0.021 kilograms is 0.000712 times the weight of a Dalmatian, and the weight of a Dalmatian is 1,400 times that amount.(a.k.a. Dalmatinac, a.k.a. Carriage Dog, a.k.a. Spotted Coach Dog, a.k.a. Firehouse Dog) (FCI standard; male)
The Fédération Cynologique Internationale (FCI) calls for Dalmatians to weigh between 27 and 32 kg. The association of the breed with fire departments (and similarly with Budweiser Beer and its team of Clydesdales) stems from their affinity for horses, having been used historically as carriage dogs capable of guiding horse-drawn fire engines to the sites of blazes.
It's about one-two-thousandth as heavy as a Toilet
In other words, 0.021 kilograms is 0.000482 times the weight of a Toilet, and the weight of a Toilet is 2,070 times that amount.(KOHLER Round front sitting flush toilet, model #K-11471-0)
The weight of a typical round front sitting flush toilet is 43.6 kg. The Indian town of Musiri in Tamil Nadu state features the world's only paying toilet, which rewards its users up to 10¢ Indian (10 paisas) per visit and uses the waste for compost and fertilizer.
It's about one-two-thousand-five-hundredth as heavy as an Octopus
In other words, the weight of an Octopus is 2,400 times 0.021 kilograms.(for Giant Pacific Octopus, Enteroctopus) (Adult, average)
The adult North Pacific Giant Octopus usually weighs around 50 kg. It is the largest octopus species and is known for its considerable intelligence, including the ability to open jars, solve mazes, and mimic other octopuses.