
It's about as big as The Blood in a Human Body
It's about ninetenths as big as a Bowling Ball
In other words, 5 liters is 0.948884723990 times the size of a Bowling Ball, and the size of a Bowling Ball is 1.0538687943 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 5.26934397150 liters. 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 seventenths as big as a Basketball
In other words, 5 liters is 0.703807357090 times the size of a Basketball, and the size of a Basketball is 1.42084334570 times that amount.
(NBA official ball standards, Size 7)A NBA official ball, manufactured by Spalding, is a Size 7 ball and measures about 7.10421672870 liters. The surface of these balls have 4,118 pebbles with a diameter of 2.5 mm each.
It's about threefifths as big as a Bowling Ball (packed)
In other words, 5 liters is 0.607286223350 times the size of a Bowling Ball (packed), and the size of a Bowling Ball (packed) is 1.64666999110 times that amount.
(64% packing density) (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 5.26934397150 liters. 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 half as big as a Basketball (packed)
In other words, 5 liters is 0.450436708520 times the size of a Basketball (packed), and the size of a Basketball (packed) is 2.22006772780 times that amount.
(64% packing density) (NBA official ball standards, Size 7)A NBA official ball, manufactured by Spalding, is a Size 7 ball measures about 7.10421672870 liters. These balls have 4,118 pebbles each with a diameter of 2.5 mm
It's about three times as big as a Human Stomach
It's about three times as big as an Ostrich Egg
In other words, 5 liters is 3.064 times the size of an Ostrich Egg, and the size of an Ostrich Egg is 0.32640 times that amount.
(Struthio camelus) (for common ostrich; average)The largest egg produced by living birds, ostrich eggs measure about 1.6 L in volume. The eggs take about nine weeks to hatch, with males and females taking turns incubating them. 
