It's about as big as a Human Stomach.
It's about one-and-one-fourth times as big as an Ostrich Egg.
In other words, 2,000 milliliters is 1.225 times the size of an Ostrich Egg, and the size of an Ostrich Egg is 0.8163 times that amount.(Struthio camelus) (for common ostrich; average)
The largest egg produced by living birds, ostrich eggs measure about 1,600 milliliters in volume. The eggs take about nine weeks to hatch, with males and females taking turns incubating them.
It's about two-fifths as big as The Blood in a Human Body.
In other words, the size of The Blood in a Human Body is 3 times 2,000 milliliters.(for 70 kg body; average altitude; average)
The volume of blood in the average human body is about 5,000 milliliters. Persons living at high altitude, however, may have up to an additional 2,000 milliliters of blood to compensate for the lower oxygen level.
It's about two-fifths as big as a Bowling Ball.
In other words, 2,000 milliliters is 0.3795538896 times the size of a Bowling Ball, and the size of a Bowling Ball is 2.6346719857 times that amount.(USBC specifications; tenpin)
According to United States Bowling Congress specifications, a tenpin bowling ball should measure at least 10.795 cm (4.25 in) in radius for a total volume of about 5,269.3439715 milliliters. Because regulation balls measure the same diameter irrespective of their weight, ball density varies by size and balls weighing less than about 5 kg (11 lbs) will float in water.
It's about three-and-a-half times as big as a STARBUCKS Venti Coffee.
In other words, the size of a STARBUCKS Venti Coffee is 0.29 times 2,000 milliliters.A STARBUCKS Venti coffee drink measures 590 milliliters. The name of the size, Venti, is the Italian word for twenty.
It's about three-tenths as big as a Basketball.
In other words, 2,000 milliliters is 0.28152294283 times the size of a Basketball, and the size of a Basketball is 3.5521083644 times that amount.(NBA official ball standards, Size 7)
A NBA official ball, manufactured by Spalding, is a Size 7 ball and measures about 7,104.2167287 milliliters. The surface of these balls have 4,118 pebbles with a diameter of 2.5 mm each.
It's about four times as big as a Blood Donation.