Split Comparison Tool
The split comparison tool places two rowing splits side by side and calculates the difference in power, projected finish times, and energy cost. Because of the cubic relationship between pace and power on a Concept2 ergometer, the significance of a split difference depends heavily on the absolute pace. A 2-second difference between 2:10 and 2:08 represents about 11 watts, while the same 2-second gap between 1:40 and 1:38 represents about 30 watts. This tool quantifies those differences precisely, helping rowers understand the true cost of pace targets and evaluate workout-to-workout progress objectively.
Split Comparison
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203W:
230WDifference+28W (+13.6%)2:00.0 vs 1:55.0
How This Works
Enter two 500m split times. The calculator converts both to watts using the Concept2 formula, computes the absolute and percentage difference in power, and projects the time difference over common rowing distances (500m, 1K, 2K, 5K, 6K, 10K, and half marathon). It also shows the marginal power cost — how many additional watts each second of split improvement requires at this pace range. This gives you practical insight into whether a pace target is achievable and how much fitness improvement it demands.
Frequently Asked Questions
Related Content
Split to Watts ConverterRowing Pace Calculator2K Time PredictorSplit TimeSplit time is the pace expressed as the time it takes to row 500 metres on an ergometer, displayed in minutes and seconds (e.g. 2:00.0/500m).Negative SplitsNegative splits in rowing means completing the second half of a workout faster (lower split time) than the first half, indicating strong pacing and endurance.Watts (Rowing)Watts in rowing measure the power output on an ergometer, calculated from the pace using the Concept2 formula: Watts = 2.80 / pace³.How to Improve Your 2K Time
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