Vertical Jump Calculator

From physics: h = ½ × g × (t/2)² where g = 9.81 m/s² and t = total hang time. A 0.5-second hang time = ~12 inches; 0.7 sec = ~24 inches. Reach-method (max reach − standing reach) is generally more accurate than timing-based approaches.

Adult male benchmarks: untrained ~16 in (40 cm); recreational athlete 20–24 in; college basketball ~28 in; NBA combine average ~35 in; elite >40 in. Female benchmarks run roughly 6–8 in lower across categories.

Combine squat strength (1.5–2× bodyweight back squat correlates with elite jump performance), plyometrics (depth jumps, bounds), and sprint work. Most untrained athletes can add 3–6 inches in 12 weeks of focused training. This estimate is for general guidance only - work with a qualified coach or sports medicine professional before pushing limits or recovering from injury.

Generally yes for healthy adults, but high-impact landings stress knees, ankles, and lower back. Build landing mechanics with submaximal jumps before testing maximums. Avoid if you have unresolved lower-extremity injuries. This is general information, not medical advice - consult your doctor before making changes to your health, diet, or exercise routine.