Free vertical jump calculator. Measure your lower body power using Lewis, Harman, Sayers, and Johnson & Bahamonde formulas. Get peak power, average power, athletic level, and percentile estimates.
Body height improves accuracy for Johnson & Bahamonde formula
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Discover your lower body explosive power from your vertical jump. This calculator uses multiple scientifically validated formulas to estimate your peak and average power output, providing insight into your athletic performance and training progress.
Vertical jump power reflects your ability to generate force rapidly—a key component of athletic performance. Several equations have been developed by sports scientists to estimate power from jump height and body mass. Each formula uses different coefficients derived from research studies comparing jump performance to measured power output.
Lewis Formula (Average Power)
Power (W) = √4.9 × Mass (kg) × √Jump (m) × 9.81Monitor improvements in explosive power from strength and plyometric training programs.
See how your power output ranks against athletes in basketball, volleyball, football, and other sports.
Vertical jump is a key metric used by scouts and coaches to assess athletic potential.
Use power data to design targeted training programs for improving explosiveness.
NBA prospects typically have vertical jumps of 70-90+ cm (28-35+ inches).
Elite volleyball players often achieve 65-85 cm (26-33 inches) vertical jumps.
Average adult males jump 40-50 cm (16-20 inches); females 30-40 cm (12-16 inches).
Top performers at the NFL Combine reach 100+ cm (40+ inches).
The Sayers formula is most widely cited in research for peak power. The Harman formula provides both peak and average power. Use Johnson & Bahamonde when you have accurate height data for improved precision.
Stand next to a wall with one arm raised and mark your reach height. Then jump and touch the highest point possible. The difference between standing reach and jump reach is your vertical jump height.
For adult males, 50-60 cm (20-24 inches) is good, 60-70 cm (24-28 inches) is excellent, and 70+ cm is elite. Females typically achieve 35-45 cm (14-18 inches) as good, with elite athletes reaching 55+ cm.
Focus on strength training (squats, deadlifts), plyometrics (box jumps, depth jumps), and technique work. Consistent training over 8-12 weeks can yield 2-4 inch improvements for most athletes.