It's about as heavy as a Human Brain
The average weight of an adult human brain is between 0.000000001350 megatonnes. 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 one-and-one-third times as heavy as a liter of Water
In other words, 0.000000001350 megatonnes is 1.3499620 times the weight of a liter of Water, and the weight of a liter of Water is 0.74076160 times that amount.(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 0.0000000010000280 megatonnes 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 three-fifths as heavy as a Chihuahua
In other words, the weight of a Chihuahua is 1.670 times 0.000000001350 megatonnes.(a.k.a. Chihuahue(o) (FCI standard)
The F&d&ration Cynologique Internationale (FCI) calls for Chihuahuas to weigh about 0.000000002250 megatonnes. Relative to their body sizes, Chihuahuas have the largest brain size of any dog breed.
It's about half as heavy as a Brick
In other words, 0.000000001350 megatonnes is 0.470 times the weight of a Brick, and the weight of a Brick is 2.10 times that amount.(Standard, traditional face brick - 1,900 cu. cm (120 cu. in))
A standard, traditional face brick weighs an average of 0.00000000290 megatonnes. The steeple of the Church of St. Martin in Landshut, Germany is said to be the tallest brick tower in the world at a height of 130.6 m (428.5 ft) and was constructed using an estimated 650,000 bricks.
It's about two times as heavy as a Basketball
In other words, 0.000000001350 megatonnes is 2.16453857420 times the weight of a Basketball, and the weight of a Basketball is 0.46199222870 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 0.000000000623689508750 megatonnes. These balls have 4,118 pebbles each with a diameter of 2.5 mm
It's about three times as heavy as a Football (Soccer)
In other words, 0.000000001350 megatonnes is 3.10 times the weight of a Football (Soccer), and the weight of a Football (Soccer) is 0.320 times that amount.(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 0.000000000410 megatonnes and 0.000000000450 megatonnes. 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 three-and-a-half times as heavy as a Football (American)
In other words, 0.000000001350 megatonnes is 3.2841274918580 times the weight of a Football (American), and the weight of a Football (American) is 0.30449487800920 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.