This estimator divides rowing power by body mass to produce watts per kilogram, a relative-power measure that can help compare output across athletes of different sizes. It also shows a pace-based ergometer power estimate for context using the common Concept2-style pace relationship.
Watts per kilogram is not the only determinant of rowing speed. On-water performance also depends strongly on technique, boat class, drag, conditions, and the way body mass affects both propulsion and resistance.
1. Enter average rowing power
Use watts from your ergometer, power meter, or analysis source.
2. Enter body mass
Use kilograms.
3. Enter pace
Use seconds per 500 m for the optional pace-derived power comparison.
4. Review W/kg
The main result is entered watts divided by body mass.
5. Compare power figures
Large differences between entered and pace-derived power can indicate that the two values came from different devices or contexts.
Power-to-weight = power (W) ÷ body mass (kg)
Pace-derived erg power (W) = 2.80 ÷ (pace seconds ÷ 500)^3
The pace-derived equation is an ergometer-style relationship and should not be treated as direct on-water power.
Higher W/kg means more entered rowing power per kilogram of body mass.
Use the same equipment and power definition when comparing athletes or sessions.
Given: 250 W, 80 kg, pace 120 sec/500m.
Calculation: W/kg = 250 ÷ 80 = 3.125. Pace-derived power = 2.80 ÷ (120 ÷ 500)^3 ≈ 202.5 W.
Result: 3.13 W/kg, with about 203 W from the pace-derived erg relationship.
No. It is an ergometer-style relationship shown for context. On-water power and pace are affected by boat and environmental factors.
Only the average power field is divided by body mass. The pace field is used separately for the pace-based comparison value.
They may come from different devices, environments, averaging methods, or measurement models. A mismatch does not automatically indicate an error.
No. The body-mass field is for the athlete’s mass because the main metric is athlete watts per kilogram.
Higher relative power can be useful, but rowing performance also depends on absolute power, technique, drag, boat class, and conditions.