Health & Fitness
FTP 20-Minute Test Calculator
Convert a 20-minute cycling test into functional threshold power and training zones.
Preparing your result…
What this calculator does
Calculates FTP 20-Minute Test Calculator using the formula verified against the cited source.
What your result means
An estimate from the inputs you enter, within the scope stated below — not advice.
Formula
FTP = average 20-minute power × 0.95
The step-by-step working for your own numbers appears with the result above and in the PDF report.
Frequently asked questions
Symbols and assumptions
- Inputs
- The values entered in the fields above
- • Conventional 20-minute FTP estimate=0.95×20-minute mean power W. Relative FTP W/kg=estimated FTP/body kg.
Sources and review
Reviewed 2026-10-18 · Next review 2027-04-18
- • Scope to a specified 20-minute test protocol. Primary validation studies show the 95% estimate is not universally interchangeable with physiological thresholds or one-hour performance. Use positive body mass and mean power; do not imply measured FTP.
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
Quick reference
| Scenario | 20-minute average power (W) | Body weight (kg) | Functional threshold power |
|---|---|---|---|
| Worked example | 260 | 72 | 247 W |
| Half the amounts | 130 | 36 | 123.5 W |
| Double the amounts | 520 | 144 | 494 W |
Need the full picture? Get the detailed PDF report with charts, tables, formulas and working steps.
Reviewed 2026-10-18 · Next review 2027-04-18
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