Power-to-Weight Ratio Calculator
Calculate your watts per kilogram (W/kg) — the number that best predicts climbing and racing performance.
How to use the power-to-weight calculator
- Enter your FTP (or any power figure) in watts.
- Enter your body weight and choose the unit.
- Click Calculate to get your W/kg and category ranking.
Raising your W/kg
There are only two levers: increase sustainable power through structured training, or reduce non-functional body mass. Most riders improve fastest by raising FTP while maintaining a healthy, fuelled weight rather than over-restricting.
Frequently asked questions
What is a good power-to-weight ratio?
Around 2–3 W/kg is recreational, 3–4 is a strong club rider, 4–5 is a competitive amateur, and 5.5–6+ at FTP is professional level.
Why does W/kg matter more than raw watts?
On climbs you must lift your whole body against gravity, so power relative to weight, not absolute power, determines how fast you go uphill.
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Estimate your Functional Threshold Power from a 20-minute test and get your full set of power training zones.
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