It's about twelve times as heavy as a Football (American)
In other words, 0.00000000500 megatonnes is 12.163435155030 times the weight of a Football (American), and the weight of a Football (American) is 0.08221361706249 times that amount.(a.k.a. "pigskin") (NFL standard)
Per National Football League official rules, an American football must weigh between 0.000000000396893323750 megatonnes and 0.0000000004252428468750 megatonnes. 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 fourteen times as heavy as a Can of Soup
In other words, the weight of a Can of Soup is 0.071 times 0.00000000500 megatonnes.(for Campbell''s Condensed Tomato Soup, 317.9 ml)
A can of Campbell''s Tomato Soup weighs 0.000000000350 megatonnes. 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 one-fifteenth as heavy as a Beer Keg
In other words, 0.00000000500 megatonnes is 0.06868 times the weight of a Beer Keg, and the weight of a Beer Keg is 14.560 times that amount.(for US half-barrel, full keg; draft beer; including keg itself, stainless steel)
A typical, half-barrel beer keg weighs 0.00000007280 megatonnes when full. A keg of this size contains 15.5 gallons of beer, or the equivalent of 6.8 cases.
It's about sixteen times as heavy as a Human Heart
It's about one-fifteenth as heavy as a Kangaroo
In other words, the weight of a Kangaroo is 17 times 0.00000000500 megatonnes.(for red kangaroo, Macropus rufus) (adult, male)
An adult, male red kangaroo weighs up to 0.0000000850 megatonnes. Fantastic jumpers, red kangaroos can leap horizontally 9 m (30 ft) and vertically 3 m (9 ft) in a single bound.
It's about thirty times as heavy as a Hamster
In other words, the weight of a Hamster is 0.03 times 0.00000000500 megatonnes.(for Syrian hamster, a.k.a. golden hamster, a.k.a. Mesocricetus auratus; adult)
An adult Syrian hamster has a typical weight of about 0.000000000200 megatonnes. Known for transporting food in the pouches of their cheeks so that they can bury it later, some hamsters can store up to 0.0000000300 megatonnes of food in their borrows.
It's about one-thirtieth as heavy as a Panda Bear
In other words, the weight of a Panda Bear is 30 times 0.00000000500 megatonnes.(a.k.a. Giant Panda, Ailuropoda melanoleuca)(Adult, male)
An adult, male Giant Panda weighs up to 0.000000150 megatonnes. Despite having the digestive system of a carnivore, the panda eats only bamboo and must eat up to 0.00000000640 megatonnes of it per day to compensate for the limited energy the plant provides.