It's about one-eight-hundred-thousandth as heavy as The Golden Gate Bridge
In other words, 999 kilograms is 0.000001240 times the weight of The Golden Gate Bridge, and the weight of The Golden Gate Bridge is 806,000 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 805,000,000 kilograms. 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 900,000 times as heavy as a Jelly Bean
In other words, 999 kilograms is 910,000 times the weight of a Jelly Bean, and the weight of a Jelly Bean is 0.00000110 times that amount.(for Jelly Belly beans; approximate)
Made of sugar, corn syrup, and pectin, a single jelly bean weighs about 0.0011 kilograms. President Ronald Reagan cited jelly beans as his favorite candy and 3,200 kilograms of the candies were served at his first inauguration in 1981.
It's about 1,500,000 times as heavy as a Nail
It's about 5,000,000 times as heavy as a Raindrop
In other words, the weight of a Raindrop is 0.000000200 times 999 kilograms.(a.k.a. drop, a.k.a. droplet) (average)
The weight of a raindrop depends heavily on the type of weather, but averages about 0.0002 kilograms. 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 0.0000002 times as heavy as The Great Pyramid of Giza
In other words, 999 kilograms is 0.000000170 times the weight of The Great Pyramid of Giza, and the weight of The Great Pyramid of Giza is 5,900,000 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 5,900,000,000 kilograms. The 2,300,000 stones used in the construction of the pyramid weighed an average 2,300 kilograms and were quarried from distances of up to 805 km (500 mi) away.
It's about 50,000,000 times as heavy as a Grain of Rice
In other words, the weight of a Grain of Rice is 0.0000000210 times 999 kilograms.(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 0.0000210 kilograms 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 250,000,000 times as heavy as a Grain of Sand
In other words, the weight of a Grain of Sand is 0.00000000430 times 999 kilograms.(medium grain)
With tremendous variety in the size of grain and the component material, grains of sand weigh an average of 0.00000440 kilograms. 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.