The Tennis Rating Power to Weight Estimator calculates peak power relative to body mass in watts per kilogram and displays a tennis rating alongside it for context. This gives players and strength coaches a body-size-normalized way to monitor a repeatable power test while keeping the competitive rating visible on the same page.
The tool does not derive power from a tennis rating, because rating systems measure competitive performance rather than mechanical output. Enter power from a consistent test—such as a force-platform jump, cycle sprint, or another standardized assessment—and body mass from the same testing period. When tracked over time, the ratio can show whether gains in raw power are keeping pace with changes in body mass, while rating remains a separate indicator of on-court performance.
1. Enter the baseline
Enter peak power from a standardized test that reports watts.
2. Add workload details
Enter body mass in kilograms from the same general testing period.
3. Set intensity or context
Enter your current tennis rating as a separate on-court context measure.
4. Review the output
Review the W/kg result and the raw power and body-mass values.
5. Use the result
For progress tracking, repeat the same test protocol and compare both W/kg and rating trends separately.
The main calculation is:
Power-to-weight ratio = Peak power (W) ÷ Body mass (kg)Tennis rating is not included in the formula. It is displayed as context because there is no standard conversion between a competitive tennis rating and physical power output.
Watts per kilogram shows how much measured peak power is produced for each kilogram of body mass.
The result depends strongly on the testing method. Compare values only when the power test and equipment are reasonably consistent.
Given: Peak power 1,700 W, body mass 74 kg, tennis rating 6.80.
Calculation: 1,700 ÷ 74 = 22.9729 W/kg.
Result: 22.97 W/kg, with a tennis rating of 6.80 shown separately.
Not necessarily. Competitive rating depends on tennis performance, while W/kg comes from a physical power test.
No. Serve speed is a velocity, not power in watts. Use a test or device that reports actual power output in watts.
Watts per kilogram requires kilograms in the denominator. If your body weight is in pounds, convert it before entering the value.
Use peak power because that is what this page is labeled to accept, and keep the same choice each time you track progress.
A higher ratio can result from more power, lower body mass, or both. Check the raw values to understand what caused the change.