Power Curve Estimator
Informational calculator for rowing logs. Add power points by duration, run model-based estimates, and compare profile trends over time.
STEP FLOW
Step 1 add points, Step 2 calculate analysis, Step 3 review auto-updated estimates.
Best-of-duration analysis
When on, repeated durations use the highest logged value for model estimates.
DURATION INPUT
POWER INPUT
LOGGED POINTS (0)
No points yet. Add a point or load sample data.
Unique durations: 0
Auto-refresh activates after your first calculation.
Power-Duration Guide
This page is an informational calculator for training logs. It turns your duration-power entries into model-based estimates for comparison, planning, and personal awareness over time.
Model Formula
CP and W' are modeled from your log entries. These values are estimate outputs for journaling and planning, not fixed outcomes.
How To Read Your Curve
- Use the dots to review what you actually logged at each duration.
- Use the line to compare model estimates across durations where you have fewer logs.
- Track month-to-month changes with the same setup and similar test conditions.
FAQ
Why is there a Calculate Analysis button?
It provides an explicit step so the flow is clear. After the first calculation, results auto-refresh as you edit points.
Can I enter split instead of watts?
Yes. Split input uses the Concept2 pace-power conversion and stores points as watts for consistent calculations.
What improves estimate confidence?
Log varied durations across short, middle, and longer efforts. Wider duration coverage usually improves estimate quality.
Why do I see a stale analysis badge?
It means your points changed and you have not run the first calculation for the current set yet.
Is the 2K output guaranteed?
No. It is a model-based projection from your current point set and works best as a planning reference.
Reading Your Power Curve
A steep drop-off from short to long durations indicates strong anaerobic capacity but limited endurance. A flatter curve suggests good aerobic fitness. Compare your curve shape to identify whether to prioritize sprint work or base building. The point where the curve flattens approximates your critical power — the boundary between sustainable and unsustainable effort.
Details: Methodology.
Related Tools
- Critical Power — calculate CP and W' from test data
- FTP Calculator — estimate threshold power for zone training
- VO2max Calculator — estimate aerobic capacity
Standards & Guides
- 1 Minute Standards — short-duration power benchmarks
- 5 Minute Standards — mid-duration power benchmarks
- Training Zones Explained — connect power curve to zone training