Rowing Effort Score Calculator

The Effort Score calculator estimates the Watta proprietary workout score on a 0-100 scale. The Effort Score is a composite metric that evaluates the total quality and intensity of a rowing ergometer session by combining four weighted components: Cardiac Load (40%), Work Output (35%), Pacing (15%), and Economy (10%). Unlike single metrics such as split time or distance, the Effort Score captures the multidimensional nature of a rowing workout — a long, moderate steady-state session and a short, intense interval piece can both earn high scores through different pathways. The score maps to four training zones: Recovery (0-25), Building (26-50), Training (51-75), and Peak (76-100).