W/kg
Watts Per Kg Calculator
The gold standard for climbing. Divide your FTP by body weight to find where you stand.
Racing Categories
Used by Zwift, TrainerRoad, and most competitive cycling platforms.
Category A
4.0+ W/kg
Elite racers, national-level competitors
Category B
3.2–3.9 W/kg
Strong club racers, Cat 1–2 level
Category C
2.5–3.1 W/kg
Recreational racers, Cat 3–4 level
Category D
< 2.5 W/kg
Beginners, fitness riders