How heavy is 0.21 pounds?
It's about one-fifth as heavy as a Football (Soccer Ball)
The weight of a Football (Soccer Ball) is about 0.950 pounds.
(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 0.90 pounds and 0.990 pounds. 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 six-and-a-half times as heavy as a Compact disc
The weight of a Compact disc is about 0.033 pounds.
(a.k.a. CD)
A compact disc typically weighs 0.033 pounds. Data is stored on CDs by encoding into the track a series of tiny pits — each between 3.5 and 850 µm (0.00014 and 0.033 in) in length.
It's about one-fifth as heavy as a Basketball
The weight of a Basketball is about 1.3750 pounds.
(NBA official ball standards, Size 7)
A regulation NBA basketball, manufactured by Spalding, is known as a Size 7 ball and weighs 1.3750 pounds. These balls have 4,118 pebbles each with a diameter of 2.5 mm
It's about eight times as heavy as a Battery (AAA)
The weight of a Battery (AAA) is about 0.026 pounds.
(Alkaline)
An "AAA" size battery weighs 0.026 pounds. Batteries are named by the American National Standards Institute (ANSI) Committee C18 and AAA batteries were given their name because they were smaller than the "AA" and "A" size batteries which were invented first.
It's about one-tenth as heavy as a liter of Water
The weight of a liter of Water is about 2.2046840 pounds.
(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 2.2046840 pounds 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 thirteen times as heavy as an Eye (Human)
The weight of an Eye (Human) is about 0.016 pounds.
(adult)
A fully developed eye (in a person over the age of thirteen), weighs about 0.016 pounds. The pupil of the eye varies depending on the amount of light it is exposed to, but typically measures about 4 mm across.
It's about one-fifteenth as heavy as a Human Brain
The weight of a Human Brain is about 2.980 pounds.
(adult)
The average weight of an adult human brain is between 2.980 pounds. 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 seventeen times as heavy as a US Quarter
The weight of a US Quarter is about 0.0125 pounds.
(United States quarter-dollar coin) (a.k.a. Quarter dollar, a.k.a. America the Beautiful quarter, a.k.a. two bits)
The America the Beautiful series quarters, which began to enter circulation in 2017, weigh 0.0125 pounds each. In answer to the common riddle, there are 119 ridges around the edge of the coin in its current design.
It's about nineteen times as heavy as a sheet of Paper
The weight of a sheet of Paper is about 0.011 pounds.
(for US Letter, a.k.a. ANSI A; 215.9mm by 279.4mm (8.5 in x 11 in); 20lb)
The weight of a ream (500 sheets) of 20 lb, 8.5 inch x 11 inch paper is 4.40 pounds, each sheet weighing 0.011 pounds. Paper of this size has a thickness of 0.004 caliper (0.1 mm).
It's about twenty times as heavy as a Die (Dice)
The weight of a Die (Dice) is about 0.009 pounds.
(for six-sided, 16 mm, rounded cube)
A die, of the size most commonly used in board games and casinos, typically weight 0.009 pounds. The use of dice and dice-like tools predates written history, with the oldest known examples belonging to a 5,000-year old backgammon set uncovered during an archaeological dig in modern-day Iran.
It's about one-twenty-fifth as heavy as a Chihuahua
The weight of a Chihuahua is about 4.960 pounds.
(a.k.a. Chihuahue(o) (FCI standard)
The F&d&ration Cynologique Internationale (FCI) calls for Chihuahuas to weigh about 4.960 pounds. Relative to their body sizes, Chihuahuas have the largest brain size of any dog breed.
It's about one-thirtieth as heavy as a Brick
The weight of a Brick is about 6.40 pounds.
(Standard, traditional face brick - 1,900 cu. cm (120 cu. in))
A standard, traditional face brick weighs an average of 6.40 pounds. 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 forty times as heavy as a US Penny
The weight of a US Penny is about 0.0055 pounds.
(United States) (formally one-cent coin) (Union shield design, 2010-present)
The weight of a United States penny is 0.0055 pounds. According to a 2010 report by the United States Mint, the cost of manufacturing and distributing a penny is $0.0179 — more than its face-value.
It's about one-fiftieth as heavy as a Gallon of Paint
The weight of a Gallon of Paint is about 10 pounds.
(excluding container; average weight)
A gallon of paint weighs about 10 pounds. Every day, 10,000,000 L (3,000,000 gal) of paint are applied in the United States.
It's about one-fiftieth as heavy as a Cat
The weight of a Cat is about 10 pounds.
(Felis catus) (Domestic; healthy weight)