Jannik Sinner is generally listed at about 6 feet 3 inches tall, which is roughly 191 centimeters.

There has been some debate and joking online about his exact height, with different sources and even Sinner himself at times suggesting anywhere from 6'2" (188 cm) up to about 6'4" (192 cm). But the most recent mainstream bio- style listings and detailed write‑ups cluster around the 191 cm / 6'3" mark, so that’s the best current estimate for “how tall is Sinner.”