FTP Calculator (20-Minute Test)
Functional Threshold Power from the standard 20-minute test × 0.95 — with the protocol that makes it valid.
The 5% haircut converts a 20-minute effort to the ~60-minute quasi-steady-state power FTP represents. Protocol honesty makes or breaks it: proper warm-up including a 5-min all-out blowout first, then the 20 alone, outdoors-or-erg consistently. Anaerobic monsters over-test (their real factor is 0.92); test the same way every block and the trend is gold.
Formula
For general information only — not medical or training advice. Estimates vary between individuals; consult a qualified professional before changing your exercise or nutrition routine.
Functional Threshold Power from the standard 20-minute test × 0.95 — with the protocol that makes it valid. The FTP Calculator (20-Minute Test) is a free, private ftp calculator tool — every result computes instantly in your browser with no sign-up and no data upload.
About FTP Calculator (20-Minute Test)
The 5% haircut converts a 20-minute effort to the ~60-minute quasi-steady-state power FTP represents. It applies FTP ≈ 20-min power × 0.95. Use the FTP Calculator (20-Minute Test) to get an instant, clearly-explained result with the working shown step by step — free, private and with the source method cited.
How to use FTP Calculator (20-Minute Test)
- 1Enter your details in the FTP Calculator (20-Minute Test) input fields above.
- 2The result updates instantly with the working and reference bands shown.
- 3Adjust any value to explore how it changes the outcome — it's free and unlimited.
Why use FTP Calculator (20-Minute Test)?
- ✓Instant ftp calculator result that recomputes as you type — no waiting, no page reloads
- ✓100% client-side: your health data never leaves your browser
- ✓Shows the actual formula and your numbers substituted in, so you can see exactly how the result is reached
- ✓Based on published, citable sources (Allen H & Coggan A — Training and Racing with a Power Meter)
- ✓Free forever with no sign-up, account or app install
Frequently asked questions
How does the FTP Calculator (20-Minute Test) work?+
The 5% haircut converts a 20-minute effort to the ~60-minute quasi-steady-state power FTP represents. The calculation uses the formula: FTP ≈ 20-min power × 0.95. Everything runs instantly in your browser as you type — your inputs are never uploaded.
Is the FTP Calculator (20-Minute Test) accurate, and what is it based on?+
The method is traceable to authoritative sources: Allen H & Coggan A — Training and Racing with a Power Meter. Results are estimates — individual variation always applies, so treat the output as a well-grounded starting point.
Is the FTP Calculator (20-Minute Test) free and private?+
Yes. It's completely free with no sign-up, and all computation happens locally in your browser, so none of your health data ever leaves your device.
Can I use this for medical decisions?+
This tool is for general fitness information only, not medical or training advice. Consult a professional before changing your routine.
What can I use the FTP Calculator (20-Minute Test) for?+
It's commonly used for ftp calculator, 20 minute ftp test, functional threshold power. Functional Threshold Power from the standard 20-minute test × 0.95 — with the protocol that makes it valid.
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