*Critical Power Calculator
Critical Power Calculator
Instructions
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To determine your critical power and W', complete 2-3 maximal efforts, each lasting between 3-mins and 20-mins. We recommend 3-mins, 5-6 mins and 12-mins. You should try to pace these with a consistent power, avoiding a hard start or finish for example.
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Find your average power for each effort.
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Enter your test data into the calculator below. Be sure to enter the test duration in seconds and not minutes.
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Your results will then be automatically calculated. There are two sets of results based on whether you completed two or three tests. Make sure you're looking at the correct section, depending on how many tests you did.
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In the Pacing Calculator section, you can generate estimates of the power you can hold over certain durations, and vice versa. This only works reliably for durations between 3-mins and 20-mins.
