Cycling FTP
Free Cycling FTP calculator with clear step-by-step results.
About Cycling FTP
Functional threshold power estimates the power you can hold for about an hour.
Formula
Formula
FTP ≈ 95% of 20-minute best power
Worked example
With the default values below, Cycling FTP returns Estimated FTP of 228.00. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Best 20-min average powerminimum 0 W
- 240 W
Results
- Estimated FTP
- 228.00 W
- Zone 2 Range
- 128-171 W
- W/kg at 75 kg
- 3.04
Step by step
- 1Values used
- 2Formula
- 3Estimated FTP= 228 W
- 4Zone 2 Range= 128-171 W
- 5W/kg at 75 kg= 3.04
Assumptions and limits
- The result is derived only from the single input listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
- Estimates are general guidance — consult a healthcare professional for personal medical advice.
- This is an estimate for general information and not professional medical advice. See the full disclaimer for the limits that apply to this kind of calculator.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Estimates are general guidance — consult a healthcare professional for personal medical advice.
Frequently Asked Questions
How does this calculator work?
Functional threshold power estimates the power you can hold for about an hour.
Why does this matter?
FTP tests require maximal effort; recover properly first.