Baseball (MLB) size — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/baseball/  (CC BY 4.0)
Basis: MLB Official Baseball Rules 3.01: 9–9¼ in circumference
Catalog version: 2026-10-20

Overall (mm): length 74.8, width 74.8, height 74.8
- Baseball (MLB): Ø72.8–74.8 mm, 141.7–148.8 g (5–5¼ oz) (MLB Official Baseball Rules 3.01: 9–9¼ in circumference). Diameter = circumference ÷ π.
- The file is a sphere at the maximum diameter (holders sized to it fit every legal ball).

dimension  value
diameter  72.8–74.8 mm
mass  141.7–148.8 g (5–5¼ oz)
rule  MLB Official Baseball Rules 3.01: 9–9¼ in circumference

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- MLB: MLB Official Baseball Rules 3.01: 9–9¼ in circumference — web — Publisher's page; dimensions are facts — https://baseballrulesacademy.com/official-rule/mlb/3-01-the-ball/

Free files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/baseball/index.json
API: https://xemstudio.com/api/geometry?object=baseball