It's about fifteen times as heavy as a Paper Clip
In other words, the weight of a Paper Clip is 0.067 times 0.021 kilograms.(average)
Notwithstanding the tremendous variation in sizes and materials, a typical paperclip weighs about 0.0014 kilograms. The country of Norway has used the paper clip as something of a national symbol since the end of World War II based on the erroneous notion that the paperclip was invented by a Norwegian, Johan Vaaler. However, the paperclip had already been in existence for at least 30 years by the time of Vaaler patented his paperclip design.
It's about one-fifteenth as heavy as a Can of Soup
In other words, the weight of a Can of Soup is 17 times 0.021 kilograms.(for Campbell''s Condensed Tomato Soup, 317.9 ml)
A can of Campbell''s Tomato Soup weighs 0.350 kilograms. Cans have been used to store soup and other foods since their invention in 1913, but a dedicated can opener was not developed until cans began to use thinner materials — prior to that time, cans were usually opened using various blunt instruments and tools.
It's about nineteen times as heavy as a Jelly Bean
In other words, the weight of a Jelly Bean is 0.053 times 0.021 kilograms.(for Jelly Belly beans; approximate)
Made of sugar, corn syrup, and pectin, a single jelly bean weighs about 0.0011 kilograms. President Ronald Reagan cited jelly beans as his favorite candy and 3,200 kilograms of the candies were served at his first inauguration in 1981.
It's about one-twentieth as heavy as a Football (American)
In other words, 0.021 kilograms is 0.05108642765112 times the weight of a Football (American), and the weight of a Football (American) is 19.574670729170 times that amount.(a.k.a. "pigskin") (NFL standard)
Per National Football League official rules, an American football must weigh between 0.396893323750 kilograms and 0.4252428468750 kilograms. Because of NFL regulations, ceremonial considerations, and backup requirements, each NFL Superbowl requires the manufacture of 144 balls exclusively for the event.
It's about one-twentieth as heavy as a Football (Soccer)
In other words, the weight of a Football (Soccer) is 20 times 0.021 kilograms.(a.k.a. Soccer, a.k.a. Association Football) (FIFA Law 2 specification)
According to FIFA's Law of the Game number 2, a football must weigh between 0.410 kilograms and 0.450 kilograms. An artifact on display at the Smith Art Gallery in Museum in Stirling, Scotland is said to be the world's oldest football and is about one-third to one-half the size of a modern football.
It's about thirty times as heavy as a Nail
It's about one-thirtieth as heavy as a Basketball
In other words, 0.021 kilograms is 0.033670600043 times the weight of a Basketball, and the weight of a Basketball is 29.6995004160 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