1,000 ping-pong balls form a heap that is 3.04 ft (92.7 cm) wide and 9.7 in (24.6 cm) tall. This collection is about half the size of a wheelbarrow load and fills about 14.7 gal (55.5 L).

Together they weigh
5.95 lb
5.95 lb (2.7 kg)
about half the size of a wheelbarrow load
Sizes and weights are typical for an adult or standard ping-pong ball; real ones vary.