It's about 10,000 times as heavy as a Pig
In other words, 0.00273 megatonnes is 11,000 times the weight of a Pig, and the weight of a Pig is 0.0000910 times that amount.(Domestic pig, Sus scrofa domesticus, a.k.a. S. domesticus) (adult)
Domestic pigs weigh between 0.000000250 megatonnes. The titular character "Babe the pig" in the 1995 family film was played by 48 different American Yorkshire piglets due to the length of filming and the rate at which piglets reach adulthood.
It's about 10,000 times as heavy as a cubic meter of Snow
In other words, 0.00273 megatonnes is 12,000 times the weight of a cubic meter of Snow, and the weight of a cubic meter of Snow is 0.0000830 times that amount.(Freshly fallen, standard conditions; measurements taken in Norway, 1965-68)
One cubic meter of freshly fallen snow under standard conditions weighs an average of 0.000000230 megatonnes. Assembled in 2008, the world record largest snowman was constructed of 0.0059 megatonnes of snow and stood 37.21 m (122.1 ft) tall.
It's about 15,000 times as heavy as The Heart of a Blue Whale
In other words, the weight of The Heart of a Blue Whale is 0.0000710 times 0.00273 megatonnes.(Balaenoptera musculus) (adult)
(for a 2014 specimen)
The heart of a blue whale weighs about 0.000000200 megatonnes. These hearts pump an estimated 7,100 L (1,875 gal) of blood through the whale's massive body.
It's about 15,000 times as heavy as a Reindeer
In other words, 0.00273 megatonnes is 16,500 times the weight of a Reindeer, and the weight of a Reindeer is 0.00006060 times that amount.(for Rangifer tarandus granti, adult, bull) (a.k.a. Caribou) ()Rangifer tarandus)
An adult, male reindeer weighs between 0.0000001660 megatonnes. Reindeer undertake a lengthy annual migration, with some herds traveling up to 5,000 km.
To all those observing, Merry Christmas from the Measure of Things.
It's about 20,000 times as heavy as a Panda Bear
In other words, 0.00273 megatonnes is 18,000 times the weight of a Panda Bear, and the weight of a Panda Bear is 0.0000560 times that amount.(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.
It's about 30,000 times as heavy as a Kangaroo
In other words, 0.00273 megatonnes is 32,000 times the weight of a Kangaroo, and the weight of a Kangaroo is 0.0000310 times that amount.(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 40,000 times as heavy as a Beer Keg
In other words, 0.00273 megatonnes is 37,500 times the weight of a Beer Keg, and the weight of a Beer Keg is 0.000026670 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.