Vertical Jump Estimator, Flight Time & Power Calculator
Calculate your vertical jump potential based on your gender, age, height, weight, body composition and training level. Find out your flight-time (hang time) and covnert your jump height and body weight into watts.
Vertical Jump Estimator / Predictor
Estimated vertical jump: —
Estimated percentile: —
This is a data-driven estimate of your current potential based on population averages by gender, age, body composition and training level. It is not a guarantee, individual genetics, technique and specific training can move your real number up or down by several inches.
Flight Time (Hang Time) Calculator
Jump height: —
Takeoff velocity: —
Jump height is derived from flight time with h = g · t² / 8 and takeoff velocity with v = g · t / 2, using g = 9.81 m/s². This is how jump mats and timing systems convert your air time into a vertical.
Jump Power / Watts Calculator
Peak power: —
Average power: —
Power to weight: —
Peak power uses the Sayers equation: PP (W) = 60.7 · jump(cm) + 45.3 · mass(kg) − 2055. Average power uses the Lewis formula. These estimate the explosive power output produced during your jump.
Vertical jump flight time to height (reference table)
Flight time is the time you spend in the air from takeoff to landing. Because gravity is constant, air time maps directly to jump height. The table below shows the jump height and takeoff velocity for common flight times.
| Flight Time (s) | Jump Height (in) | Jump Height (cm) | Takeoff Velocity (m/s) |
|---|---|---|---|
| 0.40 | 7.7" | 19.6 cm | 1.96 |
| 0.45 | 9.8" | 24.8 cm | 2.21 |
| 0.50 | 12.1" | 30.7 cm | 2.45 |
| 0.55 | 14.6" | 37.1 cm | 2.70 |
| 0.60 | 17.4" | 44.1 cm | 2.94 |
| 0.65 | 20.4" | 51.8 cm | 3.19 |
| 0.70 | 23.6" | 60.1 cm | 3.43 |
| 0.75 | 27.1" | 69.0 cm | 3.68 |
| 0.80 | 30.9" | 78.5 cm | 3.92 |
| 0.85 | 34.9" | 88.6 cm | 4.17 |
| 0.90 | 39.1" | 99.3 cm | 4.41 |
Vertical jump physics and power formulas
The vertical jump connects three physics quantities: flight time, jump height and takeoff velocity. Jump height equals gravity times flight time squared divided by eight (h = g·t²/8). Takeoff velocity equals gravity times flight time divided by two (v = g·t/2). Displacement is the jump height itself, the vertical distance your center of mass travels from takeoff to peak.
Jump power converts your jump height and body mass into watts. The Sayers peak power equation estimates explosive output as PP (W) = 60.7 · jump height (cm) + 45.3 · body mass (kg) − 2055. Heavier and higher-jumping athletes produce more absolute watts, while power-to-weight (watts per kilogram) gives a fairer comparison across body sizes.
Once you know your vertical, use our vertical jump dunk calculator to see how many inches you need to touch the rim or dunk.
