It's about four-fifths as big as an Ostrich Egg.
In other words, 263.740 teaspoons is 0.79650 times the size of an Ostrich Egg, and the size of an Ostrich Egg is 1.2550 times that amount.(Struthio camelus) (for common ostrich; average)
The largest egg produced by living birds, ostrich eggs measure about 324.60 teaspoons in volume. The eggs take about nine weeks to hatch, with males and females taking turns incubating them.
It's about three-fifths as big as a Human Stomach.
It's about two times as big as a STARBUCKS Venti Coffee.
In other words, 263.740 teaspoons is 2.20 times the size of a STARBUCKS Venti Coffee, and the size of a STARBUCKS Venti Coffee is 0.450 times that amount.A STARBUCKS Venti coffee drink measures 120 teaspoons. The name of the size, Venti, is the Italian word for twenty.
It's about three times as big as a Blood Donation.
It's about three-tenths as big as The Blood in a Human Body.
In other words, the size of The Blood in a Human Body is 3 times 263.740 teaspoons.(for 70 kg body; average altitude; average)
The volume of blood in the average human body is about 1,000 teaspoons. Persons living at high altitude, however, may have up to an additional 400 teaspoons of blood to compensate for the lower oxygen level.
It's about four times as big as a Baseball (packed).
In other words, 263.740 teaspoons is 3.95471040 times the size of a Baseball (packed), and the size of a Baseball (packed) is 0.252863020 times that amount.(64% packing density) (MLB rules)
Per Major League Baseball rules, a baseball must measure between about 40.9284950 teaspoons and 44.4348220 teaspoons. A major league pitcher can throw a fastball at up to 150 kph (91 mph).
It's about one-fourth as big as a Bowling Ball.
In other words, 263.740 teaspoons is 0.246701256960 times the size of a Bowling Ball, and the size of a Bowling Ball is 4.05348563 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 1,069.0663001 teaspoons. 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.