It's about 800,000 times as heavy as a Nail
In other words, 10,000,000 grains is 820,000 times the weight of a Nail, and the weight of a Nail is 0.00000120 times that amount.(for 15-gauge, 2-inch, finishing nails)
A two-inch finishing nail weighs 12 grains. Nails have been in use for more than 5,400 years and were ven used as a medium of exchange in ancient times.
It's about 0.0000008 times as heavy as The Golden Gate Bridge
In other words, 10,000,000 grains is 0.0000008050 times the weight of The Golden Gate Bridge, and the weight of The Golden Gate Bridge is 1,240,000 times that amount.(San Francisco, California and Marin County, California) (Post 1986 weight reduction; total weight of bridge, anchorage, and approaches)
Following the completion of the 1986 project to eliminate excess material, the total weight of the Golden Gate Bridge — including its anchorages and approaches — is 12,400,000,000,000 grains. The two main cables in the spanning the bridge are spun out of a total of 129,000 km (80,200 mi) of wire.
It's about 3,000,000 times as heavy as a Raindrop
In other words, the weight of a Raindrop is 0.000000300 times 10,000,000 grains.(a.k.a. drop, a.k.a. droplet) (average)
The weight of a raindrop depends heavily on the type of weather, but averages about 3 grains. 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 0.0000001 times as heavy as The Great Pyramid of Giza
In other words, 10,000,000 grains is 0.000000110 times the weight of The Great Pyramid of Giza, and the weight of The Great Pyramid of Giza is 9,100,000 times that amount.(a.k.a. Pyramid of Khufu, a.k.a. Pyramid of Cheops) (Cairo, Egypt)
The Great Pyramid of Giza has an estimated mass of 91,000,000,000,000 grains. The 2,300,000 stones used in the construction of the pyramid weighed an average 35,000,000 grains and were quarried from distances of up to 805 km (500 mi) away.
It's about 30,000,000 times as heavy as a Grain of Rice
In other words, 10,000,000 grains is 31,000,000 times the weight of a Grain of Rice, and the weight of a Grain of Rice is 0.0000000320 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 0.320 grains 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 150,000,000 times as heavy as a Grain of Sand
In other words, the weight of a Grain of Sand is 0.00000000670 times 10,000,000 grains.(medium grain)
With tremendous variety in the size of grain and the component material, grains of sand weigh an average of 0.068 grains. 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 200,000,000 times as heavy as a Sesame Seed
In other words, 10,000,000 grains is 178,000,000 times the weight of a Sesame Seed, and the weight of a Sesame Seed is 0.000000005620 times that amount.(Sesamum indicum)
A sesame seed weighs approximately 0.0562 grains. The McDonald's Big Mac sandwich, which is well-known for its sesame seed top bun, accounts for the consumption of an estimated 31,000,000 grains of sesame seeds each day.