FTP

Estimate functional threshold power from your 20-minute average power.

20-minute test

Use the average power from a recent best 20-minute effort, not normalized or peak power.

20-minute average power (W)

This is an estimate. Individual differences and test execution affect the result.

Estimated FTP

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Your result will appear here.

How this is calculated

This tool estimates FTP as 95% of average power from a recent best 20-minute effort. It rounds the estimate to whole watts. For example, 300 W gives an estimated FTP of 285 W.

The factor does not apply to ramp tests or 10-minute tests. Individual physiology, pacing, fatigue, and test execution can affect the estimate. This version supports the 20-minute method only.

Use a completed test result. For protocol guidance, see Hunter Allen’s 20-minute test explanation. The calculation follows TrainingPeaks threshold guidance.

Supported input: 1 to 2,000 W. This is a product input limit, not a physiological classification. Power zones and other test protocols are not included yet.

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