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Vertical Jump Power Calculator

Estimate your vertical jump power in watts and see your estimated peak power, average power, and bodyweight-relative power.

1

Your Bodyweight

lb
Enter your current bodyweight.
2

Vertical Jump Height

in
Enter your vertical jump height.

Your Estimated Jump Power:

0 W

Power is estimated from your vertical jump height and bodyweight.

Your Vertical Jump Power Calculator Results

0 W
peak power
0 W
average power
0
W / kg
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This result is an informational estimate and is not medical or health advice. The power estimate does not replace direct measurement with a force plate or other laboratory-grade testing equipment.
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How Does the Vertical Jump Power Calculator Work?

The Vertical Jump Power Calculator estimates lower-body power in watts using your vertical jump height and bodyweight. The Sayers equation is used to estimate peak power, while the Harman equation is used to estimate average power. Both values are regression-based estimates, so they are best used for tracking repeated tests performed under consistent conditions.

Term What does it mean? In the calculation Why does it matter?
Vertical jump The vertical displacement measured during the jump test. cm A greater jump height generally produces a higher estimated power value in the equations.
Bodyweight Your body mass used in the power equations. kg Body mass is included in both equations, so the same jump height can produce different estimated power values at different bodyweights.
Peak power The estimated maximum power output associated with the jump. 60.7 × jump height + 45.3 × body mass − 2055 This is the primary power estimate produced by the Sayers equation.
Average power An estimated average power value derived from the jump. 21.2 × jump height + 23.0 × body mass − 1393 It provides a second power metric based on the Harman equation.
Relative peak power Peak power expressed relative to bodyweight. W ÷ kg This helps account for differences in bodyweight when monitoring your own performance.

1. Measure Your Jump Height

The calculator starts with your vertical jump height. For the most useful comparisons over time, use the same testing method and similar technique each time you measure your jump.

2. Calculate Sayers Peak Power

The Sayers et al. (1999) equation uses jump height and body mass to estimate peak power. The equation is 60.7 × jump height in cm + 45.3 × body mass in kg − 2055.

3. Calculate Average and Relative Power

Average power is estimated using the Harman equation, while peak power is divided by body mass to calculate relative peak power in W/kg.

Sayers peak power:
60.7 × jump height (cm) + 45.3 × body mass (kg) − 2055 = estimated peak power (W)

Harman average power:
21.2 × jump height (cm) + 23.0 × body mass (kg) − 1393 = estimated average power (W)

Relative peak power:
peak power (W) ÷ body mass (kg) = relative peak power (W/kg)

The Sayers equation is a regression-based estimate rather than a direct force-plate measurement. Actual power can differ because of jump technique, measurement method, coordination, biomechanics, and individual differences. The calculator is therefore best suited to performance tracking and repeated testing under consistent conditions.

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Fitness Calculators
Vertical Jump Power Calculator

Vertical Jump Power Calculator estimates your peak power, average power, and relative power from your vertical jump height and bodyweight. Peak power uses the Sayers equation, while average power uses the Harman equation. Results are regression-based estimates rather than direct force-plate measurements, making them especially useful for tracking changes in your own performance over time.

Medical Disclaimer: The calculator results and information provided in this article are for educational and informational purposes only and do not constitute medical, health, or professional advice. Always consult with a qualified healthcare provider before making any decisions related to your health, diet, or fitness goals. Individual results may vary, and this tool should not be used to diagnose or treat any medical condition.

What does the Vertical Jump Power Calculator measure?

The Vertical Jump Power Calculator estimates lower-body power from your vertical jump height and bodyweight. Unlike jump height alone, the power calculation incorporates body mass into the estimate. The result is expressed in watts and can also be viewed relative to bodyweight in W/kg.

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How is vertical jump power calculated?

The calculator uses established regression equations based on vertical jump height and body mass. The Sayers equation estimates peak power, while the Harman equation estimates average power. These equations provide an estimate rather than a direct measurement of mechanical power.

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What is a good vertical jump?

A good vertical jump depends on factors such as training status, age, sex, sport, jumping technique, and the testing method used. There is no single jump height that represents a universally good result for everyone. For many athletes, comparing their own results over time is more useful than relying on one absolute benchmark.

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What is the difference between peak power and average power?

Peak power represents the estimated maximum power output associated with the jump, while average power provides a separate estimate using the Harman equation. The calculator uses the Sayers equation for peak power and the Harman equation for average power. They should therefore be treated as two different performance metrics rather than interchangeable values.

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Why is relative power measured in W/kg?

Relative power divides your estimated power output by your bodyweight. This helps put the absolute power result into the context of your body mass. Tracking W/kg can therefore be useful when your bodyweight changes while you are also monitoring explosive performance.

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How can you improve your vertical jump?

Vertical jump performance depends on strength, rate of force development, explosiveness, coordination, and jumping technique. Strength training can help develop the force-producing capacity needed for jumping, while appropriately programmed plyometric work can train rapid force production. Consistent testing under the same conditions can help you determine whether your training is improving your measured performance.

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