Power Calculator
Enter hang time or jump height, plus body weight, from a vertical jump test. Height and peak power update instantly.
Test Input
Body Weight
Jump Height
Peak Power
Jump height comes directly from flight-time physics (height = g × t² ÷ 8), assuming takeoff and landing at the same height. Peak power uses the Sayers equation (Sayers et al., 1999), the most-validated regression for estimating power from a jump test without a force plate. It was derived from an adult athletic population, so treat results outside that range (children, very light body weights) as a rougher estimate. This is a field-test estimate, not a lab measurement. The "Average Person to Olympic" gauge is a rough illustrative reference, not a validated fitness scale: there's no single agreed table for this in the literature, so the two ends are calculated from the same Sayers formula at a fixed reference bodyweight, using a minimal-effort jump height at one end and an elite/competitive jump height at the other.