Golf ball vs Tennis ball: size comparison
Golf ball: 4.27 cm. Tennis ball: 6.7 cm. Both silhouettes are drawn at the same scale.
Size ratio: ×1.6
Golf ball
4.27 cm
What is measured Minimum regulation diameter of a golf ball
Its dimples cut drag and nearly double the flight distance.
Source : Wikipedia — Golf ball
Tennis ball
6.7 cm
What is measured Diameter of a regulation tennis ball
Rules require a diameter between 6.54 and 6.86 cm.
Source : Wikipedia — Tennis ball