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health.cycling-FTP-zones Calculator
Calculates FTP from a 20-minute power test and derives the seven Coggan power zones in both watts and W/kg. FTP is the single most important number in structured cycling training — all zone targets, interval prescriptions, and race pacing are derived from it.
Inputs
Ftp W
Rate of energy transfer (W). P = V×I (electrical). P = F×v (mechanical). 1 horsepower ≈ 746 W.
Weight Kg
Body or object weight. For health calculators, usually in kg or lbs.
Target Zone
Reference formula or conversion factor shown for context.
Results
FTP power-to-weight (W/kg)
The computed weight (gravitational force) or mass.
zone
Sample size or count used in the calculation.
FTP (W/kg) category
The classification bucket this result falls into based on the computed value and the applicable reference scale.
Coggan zones
Sample size or count used in the calculation.
FTP test protocol
Reference formula or conversion factor shown for context.