Tennis ball size — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/tennis-ball/  (CC BY 4.0)
Basis: ITF Rules of Tennis 2026, Appendix I
Catalog version: 2026-10-20

Overall (mm): length 68.6, width 68.6, height 68.6
- Tennis ball: Ø65.4–68.6 mm, 56.0–59.4 g (ITF Rules of Tennis 2026, Appendix I).
- The file is a sphere at the maximum diameter (holders sized to it fit every legal ball).

dimension  value
diameter  65.4–68.6 mm
mass  56.0–59.4 g
rule  ITF Rules of Tennis 2026, Appendix I

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- ITF: ITF Rules of Tennis 2026, Appendix I — web — Publisher's page; dimensions are facts — https://www.itftennis.com/media/7221/2026-rules-of-tennis-english.pdf

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