Table tennis ball size — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/table-tennis-ball/  (CC BY 4.0)
Basis: ITTF Laws 2.3.1–2.3.2
Catalog version: 2026-10-20

Overall (mm): length 40.0, width 40.0, height 40.0
- Table tennis ball: Ø40 mm, 2.7 g (ITTF Laws 2.3.1–2.3.2).
- The file is a sphere at the maximum diameter (holders sized to it fit every legal ball).

dimension  value
diameter  40 mm
mass  2.7 g
rule  ITTF Laws 2.3.1–2.3.2

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- ITTF: ITTF Laws 2.3.1–2.3.2 — web — Publisher's page; dimensions are facts — https://cdn.megaspin.net/rules/pdf/2021/ittf-rules-2.pdf

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