Watts per Kilogram (W/kg) Cycling Power-to-Weight Ratio Calculator
Computes watts per kilogram W/kg = power_W / weight_kg. Also classifies the rider by W/kg range (untrained < 2, recreati...
Pace, power, and performance math for every sport.
Running, cycling, swimming, and gym math — from race pace and splits to power-to-weight and training-load calculations.
Computes watts per kilogram W/kg = power_W / weight_kg. Also classifies the rider by W/kg range (untrained < 2, recreati...
Cycling (and running) power-to-weight ratio in W/kg — the single strongest predictor of climbing performance.
Calculates all seven cycling training power zones (Coggan zones) from the rider's Functional Threshold Power (FTP) in wa...
Estimates FTP from a 20-minute maximal effort test: FTP = 0.95 × avg 20-min power. Also computes training zones based on...
Calculates energy expenditure: kJ = power(W) × duration(s) / 1000. At ~22% efficiency, kcal ≈ kJ × (1/4.184) / 0.22 = kJ...
Calculates cycling power-to-weight ratio from Functional Threshold Power (FTP) and body mass, and classifies the rider c...
Calculates cycling FTP (watts/kg) from absolute FTP and body weight. Classification: <2 untrained, 2–2.9 recreational, 3...
Calculates TSS = (duration_sec × NP × IF) / (FTP × 3600) × 100, where NP is normalised power, IF = NP/FTP, and FTP is fu...
Estimates cycling power output from speed, gradient, drag area (CdA), rolling resistance (Crr), and total mass. Accounts...
Estimate the power required to cycle at a given speed on a given grade, accounting for rolling resistance, aerodynamic d...