It's about one-nine-thousandth as heavy as The Tongue of a Blue Whale
In other words, 0.310 kilograms is 0.0001 times the weight of The Tongue of a Blue Whale, and the weight of The Tongue of a Blue Whale is 9,100 times that amount.(Balaenoptera musculus) (adult)
The tongue of a Blue Whale can weigh up to 2,700 kilograms. Despite their tremendous size, blue whales feed almost exclusively on tiny crustaceans called krill and cannot swallow anything much larger than a beach ball.
It's about one-ten-thousandth as heavy as a Hippopotamus
In other words, 0.310 kilograms is 0.000082 times the weight of a Hippopotamus, and the weight of a Hippopotamus is 12,000 times that amount.(Hippopotamus amphibius) (adult, male)
The average weight of an adult male hippopotamus ranges from 3,000 to 4,500 kg. Appearances to the contrary, adult hippos cannot swim or float in water; they actually move by leaping and walking across lake bottoms at about 8 kph (5 mph).
It's about 15,000 times as heavy as a Grain of Rice
In other words, 0.310 kilograms is 15,000 times the weight of a Grain of Rice, and the weight of a Grain of Rice is 0.000067 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 0.0000210 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 one-twenty-thousandth as heavy as an Elephant
In other words, 0.310 kilograms is 0.000051 times the weight of an Elephant, and the weight of an Elephant is 20,000 times that amount.(for African bush elephant, Loxodonta africana) (Adult, bull)
A bull African bush elephant weighs about 6,100 kg. Among African elephants, both males and females have tusks (whereas female Asian elephants, Elephas maximus, do not have tusks) which can grow to 3 m (10 ft) and typically weigh about 4,000 kg
It's about one-twenty-thousandth as heavy as a Tyrannosaurus rex
In other words, 0.310 kilograms is 0.000048 times the weight of a Tyrannosaurus rex, and the weight of a Tyrannosaurus rex is 21,000 times that amount.(for FMNH PR2081, a.k.a. "Sue") (a.k.a. Tyrannosaurus, a.k.a. T-Rex) (estimated live weight)
The notable Tyrannosaurus specimen housed at the Field Museum of Natural History in Chicago, Illinois, "Sue," is estimated to have weighed about 6,400 kilograms while alive. A renowned predator in popular culture, the teeth of tyrannosaurus rex were up to 33.02 cm (13 in) long.
It's about one-thirty-five-thousandth as heavy as an Anchor of a Cruise Ship
In other words, 0.310 kilograms is 0.0000274 times the weight of an Anchor of a Cruise Ship, and the weight of an Anchor of a Cruise Ship is 36,500 times that amount.(for QE2 forward anchor, a.k.a. RMS Queen Elizabeth 2)
Each of the forward anchors of the RMS Queen Elizabeth 2 weighs 11,300 kg. The anchor of the QE2 now sits in front of the Holyrood Church in Southampton, England, United Kingdom, along a pedestrian tourist route known as "the QE2 mile."
It's about 70,000 times as heavy as a Grain of Sand
In other words, 0.310 kilograms is 70,000 times the weight of a Grain of Sand, and the weight of a Grain of Sand is 0.000014 times that amount.(medium grain)
With tremendous variety in the size of grain and the component material, grains of sand weigh an average of 0.00000440 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.