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Cycling Power-to-Weight Calculator
Watts per kg cycling
Functional threshold power vs body mass with descriptive category, estimated 20-minute power (~105% FTP), and seven training zone anchors.
On this page (tap to expand)
Quick answer: Cycling Power-to-Weight Calculator
FTP ÷ kg → W/kg category bands, ~20-min power estimate, and Coggan-style seven zones.
Example: 3.8 W/kg might label “good” amateur before age/gender context from external tables.
Calculations follow the documented formula on this page; rounding and input units can change the last digit—treat outputs as educational estimates unless you reconcile with source systems.
* This is an estimate. Actual amounts may vary slightly based on input assumptions.
What this calculator does
- Cycling Power-to-Weight Calculator
- W/kg from FTP and weight; category band, 20-min power, Coggan-style zones.
Indoor trainer FTP may differ from outdoor aero losses - note environment when comparing.
Functional threshold power vs body mass with descriptive category, estimated 20-minute power (~105% FTP), and seven training zone anchors.
Inputs on this page: FTP (watts), Body weight, Weight unit. Assumptions stay visible so you can reproduce the figure elsewhere.
When to use it
- Use Cycling Power-to-Weight Calculator when you need a transparent watts per kg cycling answer before you commit numbers to a spreadsheet, invoice, or conversation.
- Reach for it when you already know (or can estimate) FTP (watts) and want the dependent result without rebuilding the formula by hand.
- Skip it when you need certified advice, signed-off payroll, or a lender’s official quote—those require the primary institution’s systems.
Key takeaways
- Test FTP fresh - not after a heavy squat day.
- CdA matters on flats; W/kg matters on climbs.
- Double-check scale weight morning-of for honest ratio.
How to use this tool
- 1Enter field-tested or smart-trainer FTP.
- 2Weight should match outdoor kit if you race that way.
- 3Zones are starting points - adjust with coaching.
Guides and explainers
Long-form walkthroughs that pair well with this calculator. When you need narrative context beyond the live fields, start here and return to the tool to plug in your own numbers.
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Practical scenarios
People who care about watts per kg cycling use Cycling Power-to-Weight Calculator as a planning sandbox: Test FTP fresh - not after a heavy squat day.
Continue in the Utility tools collection or the glossary. Related calculators in this session: VO2 Max Calculator, Race Pace Calculator, Daily Calorie Calculator, Car Running Cost Calculator, 1 Rep Max Calculator, Acres to Hectares Converter.
Key formula explained
How the calculation works
The Formula
W/kg = FTP÷mass; category bands; Coggan-style zone anchors from FTP- FTP (watts): the value you enter for ftp.
- Body weight: the value you enter for weight.
- Weight unit: the value you enter for w unit.
| This tool | W/kg = FTP÷mass; category bands; Coggan-style zone anchors from FTP |
|---|---|
| Related intent: watts per kg cycling | See paired tools for watts per kg cycling-each page documents its own core relationship next to the live form. |
| Related intent: FTP calculator | See paired tools for FTP calculator-each page documents its own core relationship next to the live form. |
Core relationship for Cycling Power-to-Weight Calculator:
W/kg = FTP÷mass; category bands; Coggan-style zone anchors from FTP
Worked check: 3.8 W/kg might label “good” amateur before age/gender context from external tables.
Related calculations
Keep the same assumptions and open a neighbor calculator when your question branches: VO2 Max Calculator, Race Pace Calculator, Daily Calorie Calculator, Car Running Cost Calculator. Each page documents its own formula beside the fields.
Learning links: Methodology · Editorial policy · Glossary
Worked real-world example
3.8 W/kg might label “good” amateur before age/gender context from external tables.
Re-enter the same numbers in the calculator above to confirm the page math matches the interactive result.
Who uses this tool?
People who care about watts per kg cycling use Cycling Power-to-Weight Calculator as a planning sandbox: Test FTP fresh - not after a heavy squat day.
Common mistakes
- For Cycling Power-to-Weight Calculator, mismatched units or periods (monthly vs annual, % vs decimal) are the fastest path to a believable wrong answer on watts per kg cycling.
- Watch for this pitfall: CdA matters on flats; W/kg matters on climbs.
- If you paste the result into a decision doc, note the formula and the page date (2026-07-18) so teammates can reproduce it.
References & sources
Official references for context. Calculator outputs are planning estimates—confirm material decisions with the primary authority or a qualified professional. See our methodology and editorial policy.
- Toollabz methodology — How we document formulas and update pages
- NIST — SI units
Content last updated 2026-07-18
FAQs
Click a question to expand the answer.
Is the Cycling Power-to-Weight Calculator free to use?
Yes, the Cycling Power-to-Weight Calculator is completely free with no hidden limits.
Can I use Cycling Power-to-Weight Calculator on mobile?
Yes. All tools are optimized for desktop, tablet, and mobile devices.
What is FTP?
Commonly defined as ~1-hour maximal steady power - protocols vary.
What does Cycling Power-to-Weight Calculator calculate in plain English?
FTP ÷ kg → W/kg category bands, ~20-min power estimate, and Coggan-style seven zones.
Can you show a worked example for Cycling Power-to-Weight Calculator?
3.8 W/kg might label “good” amateur before age/gender context from external tables.
What are the most important tips when using Cycling Power-to-Weight Calculator?
Test FTP fresh - not after a heavy squat day. CdA matters on flats; W/kg matters on climbs. Double-check scale weight morning-of for honest ratio.
How does Cycling Power-to-Weight Calculator arrive at the result?
Indoor trainer FTP may differ from outdoor aero losses - note environment when comparing. Formula reference: W/kg = FTP÷mass; category bands; Coggan-style zone anchors from FTP
Next step
Open the full directory, browse your hub collection, or jump back to this category. Bookmark the page if you use it often.
Built and maintained by Imtiaz Ahmad
Founder and lead engineer | Content updated July 18, 2026
See methodology and editorial policy.