Cycling Power & FTP Calculator
Sports & GamingCalculate your Functional Threshold Power (FTP) from a 20-minute power test.
Estimated FTP
Your estimated Functional Threshold Power, using the standard 95% adjustment from a 20-minute max effort.
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Odeh Ahwal0people find this calculator helpful
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Saved
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Frequently Asked Questions
What is FTP?
Functional Threshold Power is the highest power output you can sustain for approximately one hour — it's the standard benchmark cyclists use to set training zones and track fitness progress over time.
Why multiply by 95% instead of using the 20-minute power directly?
A 20-minute maximal effort is sustainable at a slightly higher power output than a true one-hour effort, so the 95% adjustment estimates your one-hour-sustainable power (true FTP) from the shorter, more practical test.
How often should I retest my FTP?
Many cyclists retest every 6-8 weeks during structured training blocks, since FTP changes as fitness improves — training zones based on an outdated FTP become less accurate over time.
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