Calculator Inputs
This page keeps a single main content flow. The calculator fields below switch to three columns on large screens, two on tablets, and one on mobile.
Example Data Table
| Athlete | Method | Key Inputs | Jump Height | Takeoff Velocity | Estimated Peak Power |
|---|---|---|---|---|---|
| Sprinter A | Reach Difference | Standing Reach 228 cm, Jump Reach 286 cm, Mass 74 kg | 58 cm | 3.37 m/s | 4827 W |
| Volleyball B | Flight Time | Flight Time 0.62 s, Mass 68 kg | 47.14 cm | 3.04 m/s | 3908 W |
| Basketball C | Velocity | Takeoff Velocity 3.30 m/s, Mass 82 kg | 55.54 cm | 3.30 m/s | 5020 W |
| General Fitness D | Reach Difference | Standing Reach 210 cm, Jump Reach 248 cm, Mass 60 kg | 38 cm | 2.73 m/s | 2998 W |
Formula Used
Meaning of symbols: h is jump height, g is gravitational acceleration, t is total airtime, v is takeoff velocity, and m is body mass.
Important assumption: Flight time calculations work best when takeoff and landing body positions are similar. Large changes in leg position can distort the estimate.
How to Use This Calculator
- Select the method that matches your testing setup.
- Choose metric or imperial units before entering values.
- Enter optional body mass and body height for extra metrics.
- Submit the form to show results directly below the header.
- Review jump height, power, airtime, benchmarks, and the graph.
- Use the export buttons to save a CSV or PDF report.
Frequently Asked Questions
1) What does vertical jump height measure?
It measures how far the athlete rises vertically during a jump. Coaches often estimate it through jump reach differences or equations based on total airtime.
2) Which method should I use?
Use reach difference for wall or Vertec-style testing, flight time for jump mats or video timing, and takeoff velocity when you have motion or sensor data.
3) Why does standing reach matter?
Standing reach separates arm length from actual jump gain. Without it, a jump reach score alone cannot show true vertical improvement.
4) Why can flight time overestimate results?
If the athlete lands with bent knees or changes body position, airtime increases even without a higher jump. Consistent posture improves accuracy.
5) What is a good vertical jump height?
It depends on sport, sex, training age, and test method. Recreational athletes often sit around the middle bands, while advanced jump athletes exceed them clearly.
6) Is estimated peak power exact?
No. It is a practical estimate based on body mass and jump height. It helps compare sessions, but lab-grade power measurement needs force platforms.
7) How often should I test vertical jump?
Once or twice weekly is usually enough for training trends. Test under similar fatigue, footwear, warm-up, and surface conditions for cleaner comparisons.
8) Can this calculator help with training progress?
Yes. It helps track height, airtime, power, and benchmark level over time. Exported reports make it easier to compare sessions and athlete blocks.