Erg Calculator
Four free
rowing erg tools
Concept2-accurate calculators. Each lives on its own page with full methodology, FAQ, and reference tables.
Pace / Watts
Convert any 500m split to watts and km/h with the Concept2 formula.
Open
Race Time Predictor
Project a target 500m split across 500m, 1K, 2K, 5K, 6K, 10K, half, marathon.
Open
Training Zones
Karvonen 7-zone heart-rate model from age + resting HR + 2K time.
Open
Stroke Rate
Split + stroke rate → distance per stroke, strokes per 2K, projected 2K time.
Open
Looking for the full calculator catalog? See all 11 rowing calculators on Flowbase →