It's about as heavy as a Grain of Sugar
(a.k.a. white sugar, a.k.a. white refined sugar, a.k.a. table sugar, a.k.a. sucrose, a.k.a. saccharose)
A grain of sugar weighs approximately 0.0000000000000006250 megatonnes. Sugar consumption varies widely by country; the average citizen of the United States consumes about 0.00000006120 megatonnes of sugar each year.
It's about two times as heavy as a Poppy Seed
In other words, 0.0000000000000006250 megatonnes is 2.10 times the weight of a Poppy Seed, and the weight of a Poppy Seed is 0.480 times that amount.(Papaver somniferum)
Fifty percent oil by weight, a poppy seed weighs approximately 0.000000000000000300 megatonnes. The true pigment of a poppy seed is brown in color, while the characteristic bluish color is an optical illusion caused by a layer of calcium oxalate crystals refracting light rays.
It's about one-fifth as heavy as a Sesame Seed
In other words, 0.0000000000000006250 megatonnes is 0.1720 times the weight of a Sesame Seed, and the weight of a Sesame Seed is 5.810 times that amount.(Sesamum indicum)
A sesame seed weighs approximately 0.000000000000003640 megatonnes. The McDonald's Big Mac sandwich, which is well-known for its sesame seed top bun, accounts for the consumption of an estimated 0.000002010 megatonnes of sesame seeds each day.
It's about one-tenth as heavy as a Grain of Sand
In other words, 0.0000000000000006250 megatonnes is 0.140 times the weight of a Grain of Sand, and the weight of a Grain of Sand is 7.10 times that amount.(medium grain)
With tremendous variety in the size of grain and the component material, grains of sand weigh an average of 0.00000000000000440 megatonnes. In 2007, a team of seven in Myrtle Beach created the world's tallest sandcastle, which measured 15.10 m (49.55 ft) in height.
It's about ten-and-a-half times as heavy as a Grain of Salt
In other words, the weight of a Grain of Salt is 0.0935 times 0.0000000000000006250 megatonnes.The mass of a grain of salt is approximately 0.00000000000000005850 megatonnes. Salt consumption varies widely by country; the people of the United States consume a combined total of about 0.057 megatonnes of salt each year.
It's about one-thirty-fifth as heavy as a Grain of Rice
In other words, the weight of a Grain of Rice is 33 times 0.0000000000000006250 megatonnes.(conventional; US; long-, medium-, and short-gran varieties; uncooked)
With great differences in variety, the average among a sampling of common short-, medium- and long-grain rices finds that a single grain weighs about 0.0000000000000210 megatonnes before cooking. A staple through most of human history, archaeological evidence indicates that the earliest rice cultivation was about 11,500 years ago.
It's about one-three-hundred-fiftieth as heavy as a Raindrop
In other words, the weight of a Raindrop is 300 times 0.0000000000000006250 megatonnes.(a.k.a. drop, a.k.a. droplet) (average)
The weight of a raindrop depends heavily on the type of weather, but averages about 0.000000000000200 megatonnes. The familiar teardrop shape of a raindrop is actually an optical illusion, caused by the reflection of the light and the motion of the drop.