It's about 3,000,000 times as heavy as a Paper Clip
In other words, 0.00000400 megatonnes is 2,900,000 times the weight of a Paper Clip, and the weight of a Paper Clip is 0.000000340 times that amount.(average)
Notwithstanding the tremendous variation in sizes and materials, a typical paperclip weighs about 0.00000000000140 megatonnes. The country of Norway has used the paper clip as something of a national symbol since the end of World War II based on the erroneous notion that the paperclip was invented by a Norwegian, Johan Vaaler. However, the paperclip had already been in existence for at least 30 years by the time of Vaaler patented his paperclip design.
It's about 3,500,000 times as heavy as a Jelly Bean
In other words, the weight of a Jelly Bean is 0.000000280 times 0.00000400 megatonnes.(for Jelly Belly beans; approximate)
Made of sugar, corn syrup, and pectin, a single jelly bean weighs about 0.00000000000110 megatonnes. President Ronald Reagan cited jelly beans as his favorite candy and 0.00000320 megatonnes of the candies were served at his first inauguration in 1981.
It's about 5,000,000 times as heavy as a Nail
It's about 20,000,000 times as heavy as a Raindrop
In other words, the weight of a Raindrop is 0.0000000500 times 0.00000400 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.
It's about 200,000,000 times as heavy as a Grain of Rice
In other words, 0.00000400 megatonnes is 190,000,000 times the weight of a Grain of Rice, and the weight of a Grain of Rice is 0.00000000530 times that amount.(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 900,000,000 times as heavy as a Grain of Sand
In other words, 0.00000400 megatonnes is 910,000,000 times the weight of a Grain of Sand, and the weight of a Grain of Sand is 0.00000000110 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 1,000,000,000 times as heavy as a Sesame Seed
In other words, 0.00000400 megatonnes is 1,100,000,000 times the weight of a Sesame Seed, and the weight of a Sesame Seed is 0.0000000009090 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.