Work out rowing watts instantly with clear inputs, formula shown and shareable results.
The Concept2 power relation converts a 500 m split into watts: 2.80 divided by the cube of seconds per metre. A 1:50 split is 0.22 s per metre, giving about 263 W. Rowers usually burn about four times their mechanical power in metabolic terms, so that is roughly 905 kcal an hour.
Concept2 power
watts = 2.80 / (split seconds / 500)^3
Energy cost
kcal/h = watts x 4 x 3600 / 4184
This is an estimate from population-average equations, not a medical or diagnostic assessment. Individual results vary with genetics, training history and technique. Seek advice from a qualified coach or clinician before making significant changes to training.
Concept2 adds a fixed resting allowance of about 300 kcal an hour, so its display exceeds the exercise-only figure.
No. Power is measured from flywheel deceleration, so the same effort gives the same watts at any drag factor - only the stroke feel changes.