How big is a baseball?

A baseball is 2 7/8 in (7.3 cm) to 3 in (7.6 cm) from side to side, a major league ball (9 to 9 1/4 in around).

Baseball: 2 7/8 in (7.3 cm) to 3 in (7.6 cm) from side to side, a major league ball (9 to 9 1/4 in around); Average US man: 5 ft 9 in (175.1 cm).Baseball: 2 7/8 in (7.3 cm) to 3 in (7.6 cm), measured to the outside diameter. Average US man: 5 ft 9 in (175.1 cm).Baseball: 2 7/8 in (7.3 cm) to 3 in (7.6 cm) from side to side, a major league ball (9 to 9 1/4 in around); Average US man: 5 ft 9 in (175.1 cm).Baseball: 2 7/8 in (7.3 cm) to 3 in (7.6 cm), measured to the outside diameter. Average US man: 5 ft 9 in (175.1 cm).

What a baseball’s size measures

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Published height

2 7/8 in (7.3 cm) to 3 in (7.6 cm)

A baseball is 2 7/8 in (7.3 cm) to 3 in (7.6 cm) from side to side, a major league ball (9 to 9 1/4 in around).

Source: Wikipedia

The published range runs from 2 7/8 in (7.3 cm) to 3 in (7.6 cm).

Compared with a baseball

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Cite this page
APAHeightvs. (2026, October 17). How big is a baseball? Drawn to scale beside a person. https://heightvs.com/how-tall/baseball
MLA“How Big Is a Baseball? Drawn to Scale Beside a Person.” Heightvs, 17 Oct. 2026, heightvs.com/how-tall/baseball.
Chicago“How Big Is a Baseball? Drawn to Scale Beside a Person.” Heightvs. Last modified October 17, 2026. https://heightvs.com/how-tall/baseball.
Link<a href="https://heightvs.com/how-tall/baseball">How big is a baseball? Drawn to scale beside a person (Heightvs)</a>

For the height itself, cite the original publisher as well: Wikipedia.

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A baseball, 2.9 in (7.3 cm), drawn to scale beside a tennis ball, 2.6 in (6.5 cm)