Question: are billiard balls the same size?
Answer: Billiard Balls. ... Billiard balls range in diameter from the largest in Russian pyramid and kaisa at 2 11/16” | 68 mm to the smallest in Snooker 2 1/16” | 52.5 mm. Other variations of billiard ball sizes are Carom at 2 7/16” | 61.5 mm, American-style at 2 1/4” | 57 mm, and British-style at 2 3/16” | 56 mm.