Free Tool
W/KG CALCULATOR
Enter your FTP and body weight. See where you stand.
METHODOLOGY
Formula: W/kg = FTP (watts) ÷ Body weight (kg). FTP should be determined from a 20-minute all-out test (×0.95) or ramp test.
Benchmarks: Based on published data from Coggan's power profiling, adjusted for real-world amateur and masters populations. Professional benchmarks from World Tour race data.
Limitations: W/kg predicts climbing speed but not flat performance (where absolute watts matter more). Body weight should be measured consistently (morning, before eating). W/kg varies with hydration and time of day.
Last updated: April 2026 · Tool version 1.0