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How Big Is a Baseball?

A baseball is about 2.9 in (7.4 cm) across. That is about 23 times smaller than the average man. A Major League baseball.

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How big is a baseball compared to the average man?

A baseball is about 23 times smaller than the average man. The average man is 23.1× the size of a baseball: about 23 baseballs stacked up would match it. By volume, about 297 baseballs would fit inside the average man.

Baseball size facts

A baseball is about 7.4 cm (2.9 in) across.

How does a baseball compare to other things?

A baseball next to 25 things of similar size, plus some everyday references:

Thing	Size	Compared to Baseball
Sun	865,000 miles (1,393,000 km) across	18.8 billion× bigger
Earth	7,920 miles (12,740 km) across	172 million× bigger
Mount Everest	5.5 miles (8.849 km)	120,000× bigger
Eiffel Tower	1,083 ft (330 m)	4,460× bigger
School bus	40 ft (12.2 m) long	165× bigger
Average man (world)	5 ft 7 in (171 cm)	23.1× bigger
Average woman (world)	5 ft 3 in (159 cm)	21.5× bigger
Goliath birdeater	11 in (28 cm) long	3.8× bigger
Basketball	9.4 in (24 cm) across	3.2× bigger
Soccer ball	8.7 in (22 cm) across	5.7 in (14.6 cm) bigger
Bowling ball	8.6 in (21.8 cm) across	5.7 in (14.4 cm) bigger
Dwarf lanternshark	7.9 in (20 cm) long	5 in (12.6 cm) bigger
Pencil	7.5 in (19 cm) long	4.6 in (11.6 cm) bigger
Banana	7.1 in (18 cm) long	4.2 in (10.6 cm) bigger
House mouse	6.7 in (17 cm) long	3.8 in (9.6 cm) bigger
Smartphone	5.8 in (14.7 cm)	2.9 in (7.3 cm) bigger
Monarch butterfly	3.9 in (10 cm) long	1 in (2.6 cm) bigger
Credit card	3.4 in (8.56 cm) long	0.46 in (1.16 cm) bigger
Apple	3.1 in (8 cm) long	0.24 in (6 mm) bigger
Tennis ball	2.6 in (6.7 cm) across	0.28 in (7 mm) smaller
Wolf spider	2.4 in (6 cm) long	0.55 in (1.4 cm) smaller
Bee hummingbird	2.2 in (5.5 cm) long	0.75 in (1.9 cm) smaller
Golf ball	1.7 in (4.27 cm) across	1.2 in (3.13 cm) smaller
US quarter	0.96 in (2.43 cm) across	3.1× smaller
Honeybee	0.59 in (1.5 cm) long	4.9× smaller

Where do these numbers come from?

Sizes are typical adult or reported values, rounded for readability. Read how we measure and compare sizes.