Cycling Watts/kg & FTP Category Chart: What Power Output Do You Need to Hit 4.0 W/kg?
Averaging 310 watts for a 20-minute all-out effort at 73.5 kg body weight yields a 294.5W FTP (95% factor) and a 4.01 W/kg power-to-weight ratio (Cat 2 competitive road racer). Includes interactive Cycling FTP (Functional Threshold Power) & Watts/kg Calculator pre-loaded with this exact scenario plus step-by-step formula breakdown. (Averaging 310 watts for a 20-minute all-out effort at 73.5 kg body weight yields a 294.5W )
In-Depth Analysis — Cycling 4.0 W/kg FTP Guide
Averaging 310 watts for a 20-minute all-out effort at 73.5 kg body weight yields a 294.5W FTP (95% factor) and a 4.01 W/kg power-to-weight ratio (Cat 2 competitive road racer).
Why this scenario matters: Calculate your Functional Threshold Power (FTP = 95% of 20-min power), power-to-weight ratio (W/kg), and Coggan zones. Using the pre-loaded interactive Cycling FTP (Functional Threshold Power) & Watts/kg Calculator above, you can test how small adjustments to the baseline inputs impact the final outcome in real time.
Formula & Verification Methodology: Deterministic RFC & standard specification engine. Benchmarked against industry quantitative standards. Compare the 6-tier Reference Benchmark Table above to evaluate conservative, baseline, and aggressive parameter scaling.
Scenario Comparison & Benchmark Table (Cycling FTP & Watts/kg)
Compare how scaling 20-Minute Max Average Power (Watts) affects your output (click any row to load those values into the calculator above):
| 20-Minute Max Average Power (Watts) | FTP & Power-to-Weight Ratio | Zone 2 Endurance Power Range | Rider Category Benchmark |
|---|---|---|---|
| 133 | 126W FTP (1.71 W/kg) | 71W – 95W | Sport / Enthusiast |
| 199 | 189W FTP (2.55 W/kg) | 106W – 142W | Sport / Enthusiast |
| 265 (Baseline) | 252W FTP (3.40 W/kg) | 141W – 189W | Cat 3 / Strong Club Rider |
| 331 | 314W FTP (4.25 W/kg) | 176W – 236W | Cat 2 / Competitive Racer |
| 398 | 378W FTP (5.11 W/kg) | 212W – 284W | Cat 1 / Domestic Pro |
| 530 | 504W FTP (6.80 W/kg) | 282W – 378W | Cat 1 / Domestic Pro |
Mathematical Formula & Step-by-Step Guide
Primary mathematical equation used by this model:
- Set 20-Minute Max Average Power (Watts) and Cyclist Body Weight (kg) (or load Lower (159), Baseline (265), Higher (398) with one click) using the numeric fields or synchronized sliders.
- Compare the primary output against the secondary metrics and live visual ratio bar.
- Scan the 6-tier Cycling FTP & Watts/kg Reference Benchmark Table below or click Download CSV / Print PDF to save your analysis.
Athletic metrics and probability calculations are for informational training and analytical use. Consult a physician before high-intensity training. 21+ Responsible Gaming.