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sport.cycling-power-to-weight Calculator
Calculates power-to-weight ratio (W/kg) from FTP and body mass, the key metric for predicting climbing ability in cycling. Tour de France climbers sustain over 6 W/kg for 20+ minutes; recreational cyclists typically produce 2–3.5 W/kg.
Inputs
Ftp Watts
Rate of energy transfer (W). P = V×I (electrical). P = F×v (mechanical). 1 horsepower ≈ 746 W.
Body Weight Kg
Body or object weight. For health calculators, usually in kg or lbs.
Bike Weight Kg
Body or object weight. For health calculators, usually in kg or lbs.
Gradient Pct
Reference formula or conversion factor shown for context.
Air Speed M S
Rate of movement. 1 m/s = 3.6 km/h = 2.237 mph.
Results
W/kg (power-to-weight)
The computed weight (gravitational force) or mass.
climb speed estimate (m/s)
The computed rate of movement or processing.
climb speed (km/h)
The computed rate of movement or processing.
W/kg category
The classification bucket this result falls into based on the computed value and the applicable reference scale.
FTP as % VO₂max power
Reference formula or conversion factor shown for context.
1 kg lighter bike
Reference formula or conversion factor shown for context.