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Wingate Anaerobic Power Calculator

Enter your test work values to get Wingate power output.

How it is calculated

The tool does not read raw pedal data; you supply work in joules for three windows, plus body mass in kg. Peak power is Ppeak = Wbest 5 s ÷ 5. Mean power is Pmean = W30 s ÷ 30. Minimum power is Pmin = Wlowest 5 s ÷ 5. Relative values divide the watts by body mass to give W/kg. The fatigue index is (Ppeak − Pmin) ÷ Ppeak × 100, the percentage of peak power lost by the weakest window. Mass must be above zero. The tool does not check that the lowest window is actually lower than the best one, so a swapped pair gives a negative fatigue index.

Worked example

A 75 kg rider records 4,500 J in the best 5 s, 3,000 J in the lowest 5 s, and 21,000 J over the full 30 s. Peak power = 4,500 ÷ 5 = 900.00 W. Mean power = 21,000 ÷ 30 = 700.00 W. Minimum power = 3,000 ÷ 5 = 600 W. Relative peak = 900 ÷ 75 = 12.00 W/kg, and relative mean = 700 ÷ 75 = 9.33 W/kg. Fatigue index = (900 − 600) ÷ 900 × 100 = 33.33%, so the rider lost a third of peak output by the weakest window.

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Common mistakes

  • Entering average watts instead of joules. The fields take work in joules for the 5-second or 30-second window; typing 900 W as the best-5-s value would divide by 5 again and give 180 W.
  • Swapping the best and lowest windows. The tool does not detect it and returns a negative fatigue index, so peak must be the larger number.
  • Using total work from a longer or shorter test. The mean divides by exactly 30 seconds, so a 20-second or 60-second effort gives a wrong mean power.
  • Entering body mass in pounds. Relative power is per kilogram, and pounds would make W/kg about 2.2 times too low.
  • Comparing fatigue index across athletes without noting the formula. It uses the lowest 5-second window, not the final one, so another lab's version using the last 5 seconds will differ.

About this calculator

The Wingate test is a 30-second all-out cycling sprint against a fixed resistance load (typically set relative to body mass), from which this calculator derives three standard metrics: peak power (the highest power output, usually measured over the best 5-second window, reflecting anaerobic alactic capacity), mean power (the average across all 30 seconds, reflecting anaerobic glycolytic capacity), and the fatigue index = (peak power − lowest power) ÷ peak power × 100%, which shows how quickly output drops off.

Sports scientists and exercise physiologists use the Wingate test as the gold-standard lab measure of anaerobic power and capacity, and strength and conditioning coaches use the resulting numbers to track an athlete's sprint and power-endurance development over a training cycle, particularly for sports like cycling, sprinting, and team sports with repeated high-intensity efforts.

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  • Editorial team

    Ergometer software often reports watts rather than joules. To feed this tool, multiply the average watts of a window by its length: 900 W held for 5 seconds is 4,500 J. For comparing tests over a season, keep the load setting, warm-up and software window the same, since the numbers shift with them. Which ergometer software do you read your results from, and does it give watts or joules?

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