Vertical Jump Power Calculator
Peak power, velocity and flight time
AI logs your meals from a photo. Diet & workouts in one app.Get the free appyour vertical jump height, e.g. 45
your body weight in kilograms, e.g. 70
Vertical Jump Power Calculator
A vertical jump is the simplest field test of lower-body explosive power, but jump height alone does not tell you how much power you produced. Enter your jump height and body weight, and this calculator returns your peak power using the Sayers equation, your relative power in watts per kilogram, your take-off velocity and your flight time. Use it to track jump training, compare power across athletes, or set objective targets for explosiveness.
Peak power uses the Sayers equation: 60.7 × jump height (cm) + 45.3 × body mass (kg) − 2055, the most widely validated estimate of lower-body explosive power from a countermovement jump. Take-off velocity and flight time come from projectile physics (v = √(2gh)). Relative power (W/kg) lets you compare athletes of different sizes. Measure jump height consistently — reach-and-jump or a jump mat — for the numbers to be comparable over time.
Frequently Asked Questions
- What does a vertical jump power calculator measure?
- It estimates the explosive power your legs produce during a vertical jump, in watts, rather than just how high you jumped. This calculator uses the Sayers equation, combining your jump height and body weight to estimate peak anaerobic power output.
- How do I calculate vertical jump power?
- The Sayers formula multiplies jump height and body mass with set coefficients to estimate peak power in watts. Enter your jump height and body weight and the tool returns peak power, relative power per kilogram, and your jump's flight time.
- What is relative power and why does it matter?
- Relative power is peak power divided by body weight (watts per kilogram), showing how explosive you are for your size. It allows fairer comparison between athletes of different builds, since a heavier person can produce more raw watts without being more explosive.