Hagele Strength Cycling Power Calculator
Estimate FTP and practical cycling training workloads from a 20-minute max watt test. Built for athletes using structured bike, BikeErg, or hybrid conditioning work.
Estimated FTP
—
95% of 20-minute average power
Power-to-Weight
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Watts per pound entered
| Training Zone | Workload | Best Use |
|---|---|---|
| — | Enter 20-minute average watts above | — |
How To Use This Calculator
Complete a hard, well-paced 20-minute bike test and enter your average watts. The calculator estimates FTP by taking 95% of that 20-minute power, then builds practical training workloads from that estimate.
If you average 250 watts for 20 minutes, your estimated FTP is 238 watts. From there, the calculator provides training ranges for recovery, endurance, tempo, threshold, VO2 max, anaerobic work, and sprint efforts.
These zones are useful starting points, not laboratory thresholds. Heat, fatigue, sleep, nutrition, cadence, bike setup, and testing discipline all influence the result. The goal is not to worship the number. The goal is to make your conditioning work more precise and repeatable.