FTP Calculator
Functional threshold power from a 20-minute test (95%), plus W/kg.
Result
FTP (W)
238
FTP per kg (W/kg)
3.39
How it works
FTP = 95% of 20-min power
FTP estimates the power you can sustain for an hour. The common test takes 95% of your best 20-minute effort, used to set training zones.
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Frequently asked questions
Why 95%?
A full hour at threshold is brutal to test, so 95% of a 20-minute effort approximates it well.
How do I use FTP?
To set power-based training zones and pace longer efforts.
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