How heavy is 621 grams?
It's about as heavy as a Basketball
The weight of a Basketball is about 623.689508750 grams.
(NBA official ball standards, Size 7)
It's about one-and-two-fifths times as heavy as a Football (Soccer Ball)
The weight of a Football (Soccer Ball) is about 430 grams.
(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 410 g and 450 g. An artifact on display at the Smith Art Gallery and 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 one-and-a-half times as heavy as an American Football
The weight of an American Football is about 411.0680853125 grams.
(a.k.a. "pigskin") (NFL standard)
It's about three-fifths as heavy as a liter of Water
The weight of a liter of Water is about 1,000.028 grams.
(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 1,000.028 grams 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-and-four-fifths times as heavy as a Can of Soup
The weight of a Can of Soup is about 350 grams.
(for Campbell''s Condensed Tomato Soup, 317.9 ml)
A can of Campbell''s Tomato Soup weighs 350 g. 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 half as heavy as a Human Brain
The weight of a Human Brain is about 1,350 grams.
The average weight of an adult human brain is between 1,300 and 1,400 g. 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 three times as heavy as a Hamster
The weight of a Hamster is about 200 grams.
(for Syrian hamster, a.k.a. golden hamster, a.k.a. Mesocricetus auratus; adult)
It's about three-tenths as heavy as a Chihuahua
The weight of a Chihuahua is about 2,250 grams.
(a.k.a. Chihuahue(o) (FCI standard)
The F&d&ration Cynologique Internationale (FCI) calls for Chihuahuas to weigh about 2,250 grams. Relative to their body sizes, Chihuahuas have the largest brain size of any dog breed.
It's about four times as heavy as a Billiard Ball
The weight of a Billiard Ball is about 163.00975796875 grams.
(American-style, WPA specifications)
Per the World Pool-Billiard Association, a billiard ball weight must weigh between 155.9223771875 g and 170.09713875 g. According to legend, the difficulty in obtaining elephant ivory for the manufacture of billiard balls in the 19th century inspired the search for a replacement material, which led to the development of the first industrial plastic.
It's about four-and-a-half times as heavy as a Baseball
The weight of a Baseball is about 145.291306015620 grams.
It's about four-and-a-half times as heavy as a Battery (D)
The weight of a Battery (D) is about 135 grams.
A "D" size battery weighs 135 g. The D size battery is the oldest of the modern battery sizes, first invented by the National Carbon Company in 1898.
It's about one-fifth as heavy as a Brick
The weight of a Brick is about 2,900 grams.
(Standard, traditional face brick - 1,900 cu. cm (120 cu. in))
It's about six-and-a-half times as heavy as a Deck of Cards
The weight of a Deck of Cards is about 94 grams.
(ISO 216 B8 size, a.k.a. "poker size" 63 x 88 mm, 52-card deck)