It's about one-twenty-thousandth as heavy as a Quarter
In other words, 0.000000000000000300 megatonnes is 0.000052910 times the weight of a Quarter, and the weight of a Quarter is 18,900 times that amount.(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 0.000000000005670 megatonnes each. In answer to the common riddle, there are 119 ridges around the edge of the coin in its current design.
It's about one-twenty-five-thousandth as heavy as an Eye (Human)
In other words, the weight of an Eye (Human) is 24,000 times 0.000000000000000300 megatonnes.(adult)
A fully developed eye (in a person over the age of thirteen), weighs about 0.00000000000710 megatonnes. 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-forty-thousandth as heavy as a Battery (AAA)
In other words, the weight of a Battery (AAA) is 40,000 times 0.000000000000000300 megatonnes.(Alkaline)
An "AAA" size battery weighs 0.0000000000120 megatonnes. 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-fifty-thousandth as heavy as a Compact disc
It's about one-seventy-thousandth as heavy as a Mouse
In other words, the weight of a Mouse is 71,000 times 0.000000000000000300 megatonnes.(a.k.a. "House mouse", Mus musculus) (adult)
The weight of a mouse is typically an average of 0.0000000000210 megatonnes. While most mice typically live two to three years, the Methuselah Mouse Prize — an award administered by a non-profit organization which advances aging-related research — was once awarded to a team of scientists whose research resulted in a mouse living just under five years.
It's about one-seventy-five-thousandth as heavy as a Battery (AA)
In other words, the weight of a Battery (AA) is 77,000 times 0.000000000000000300 megatonnes.(Alkaline)
An "AA" size battery weighs 0.0000000000240 megatonnes. AA batteries came into common use during World War II and were given their name by the American National Standards Institute (ANSI) Committee C18 because they were smaller than the "A" size batteries which were invented first.
It's about one-one-hundred-thousandth as heavy as a Light Bulb
In other words, 0.000000000000000300 megatonnes is 0.00000880 times the weight of a Light Bulb, and the weight of a Light Bulb is 110,000 times that amount.(a.k.a. lamp) (for A19-size, 60w, incandescent bulb by Bulbrite; package weight)
A standard, sixty-watt light bulb weighs about 0.0000000000340 megatonnes. The tightly-coiled filament inside a bulb of this size would measure about 579mm if uncoiled and stretched out.