Official specifications for table tennis balls including size, weight, color, and material.
The table tennis ball is a critical component of the sport with specific regulations:
**Basic Specifications:**
- Diameter: 40mm (changed from 38mm in 2000)
- Weight: 2.7 grams
- Material: Celluloid or similar plastics (now poly-plastic)
- Color: White or orange (must be matt finish)
**Quality Standards:**
- The ball must be spherical
- Must have uniform bounce characteristics
- Must be seamless
- Quality ratings: 1-star (training), 2-star (intermediate), 3-star (competition)
**Historical Changes:**
- 2000: Ball size increased from 38mm to 40mm to slow the game for television
- 2014: Transition from celluloid to poly-plastic balls for safety reasons
**Testing:**
- Official competition balls must be approved by ITTF
- Must pass rigorous testing for size, weight, roundness, and bounce consistency
- Only ITTF approved balls can be used in sanctioned tournaments
**Playing Characteristics:**
- The larger 40mm ball travels slightly slower through the air
- Produces more visible spin
- Easier to see for spectators and television cameras
Understanding ball specifications is essential for competitive play and equipment selection.