What's a Good FTP (and Watts per Kilogram)?

What counts as a good FTP and a good watts-per-kilogram, with ranges from beginner to pro, why W/kg beats raw watts on climbs, and how to test yours.

Sven Ahrens2026年6月13日最終更新 2026年9月6日

FTPwatts per kgpowercyclingpower-to-weight

A good FTP is measured in watts per kilogram. At FTP, 2.5 to 3.0 W/kg is a typical recreational rider, 3.5 to 4.0 W/kg is a strong club racer, and 4.5 W/kg and up is the top few percent of cyclists. Women's bands sit a little lower at each level. Raw watts mean little without body weight: a 300-watt FTP is elite for a 60 kg rider and solid for a 95 kg rider.

What is FTP?

FTP stands for Functional Threshold Power, the highest steady power you can hold for about an hour. Your cycling power zones are percentages of it, so a wrong FTP makes every zone wrong.

Critical Power is a close relative. It comes from several maximal efforts of different durations fitted to a curve, which is more precise and more work. FTP is the practical shorthand. See Critical Power in the glossary.

What is watts per kilogram, and why does it matter more than raw watts?

Watts per kilogram (W/kg) is FTP divided by body weight. A 280-watt FTP at 70 kg is a power-to-weight ratio of 4.0 W/kg.

On a climb you fight gravity, and gravity scales with weight. Two riders with 300-watt FTPs climb at very different speeds if one weighs 65 kg and the other 90 kg. On a flat time trial, aerodynamic drag dominates and raw watts matter more. For climbing and for comparing fitness, W/kg is the number that travels. Work out yours with the watts-per-kilogram calculator.

What are the approximate category ranges?

These ranges come from the Coggan power profile. They overlap and vary by test method.

For men, at FTP:

2.0 to 2.5 W/kg: untrained or new to structured riding
2.5 to 3.0 W/kg: typical recreational rider
3.0 to 3.5 W/kg: fit enthusiast, regular training
3.5 to 4.0 W/kg: strong club racer
4.0 to 4.5 W/kg: competitive amateur racer
4.5 W/kg and up: the top few percent. The pro peloton sits above 5.5 W/kg.

For women, shift each band down by roughly 0.3 to 0.5 W/kg. A strong female club racer sits around 3.2 to 3.7 W/kg.

How do I find my FTP?

The 20-minute test. Warm up, ride as hard as you can sustain for 20 minutes, multiply the average power by 0.95. The classic field test and the one most plans assume.
The ramp test. Ride a steadily rising power until you cannot continue. Software estimates FTP from your final minute. Shorter and less pacing-dependent, but it can read high or low depending on your physiology.
A smart-trainer estimate. Many platforms estimate FTP from ride data over time. A fine starting point. Confirm it with a real test before trusting your zones to it.

Retest every 6 to 8 weeks. Turn the result into W/kg and zones below, or with the FTP calculator.

FTP

250W

スイートスポット

220–235W

FTPの88〜94%

ゾーン	範囲	鍛えられるもの
Z1	アクティブリカバリー ≤ 138 W	リカバリー。負荷を加えずに脚を回します。 RPE 1〜2、非常に楽。
Z2	エンデュランス 139–188 W	有酸素的土台、脂質酸化、一日中続けられるペース。 RPE 3〜4、会話可能。
Z3	テンポ 189–225 W	有酸素的持久力と筋効率。 RPE 5〜6、快適にきつい。
Z4	スレッショルド 226–263 W	乳酸性作業閾値、FTPの運動、持続可能な上限。 RPE 7〜8、10〜30分のレップ。
Z5	VO₂max 264–300 W	最大有酸素パワー。3〜8分のインターバル。 RPE 9、非常にきつい。
Z6	無酸素性容量 301–375 W	無酸素性容量。30秒〜3分の運動。 RPE 9〜10、最大に近い。
Z7	神経筋パワー ≥ 376 W	スプリントと神経筋パワー。 RPE 10、全力スプリント。

アクティブリカバリー

≤ 138 W

エンデュランス

139–188 W

テンポ

189–225 W

スレッショルド

226–263 W

VO₂max

264–300 W

無酸素性容量

301–375 W

神経筋パワー

≥ 376 W

Z1 · アクティブリカバリー. リカバリー。負荷を加えずに脚を回します。 RPE 1〜2、非常に楽。

Z2 · エンデュランス. 有酸素的土台、脂質酸化、一日中続けられるペース。 RPE 3〜4、会話可能。

Z3 · テンポ. 有酸素的持久力と筋効率。 RPE 5〜6、快適にきつい。

Z4 · スレッショルド. 乳酸性作業閾値、FTPの運動、持続可能な上限。 RPE 7〜8、10〜30分のレップ。

Z5 · VO₂max. 最大有酸素パワー。3〜8分のインターバル。 RPE 9、非常にきつい。

Z6 · 無酸素性容量. 無酸素性容量。30秒〜3分の運動。 RPE 9〜10、最大に近い。

Z7 · 神経筋パワー. スプリントと神経筋パワー。 RPE 10、全力スプリント。

Andrew Cogganの7ゾーンモデルは、すべてのゾーンを機能的作業閾値パワー（FTP）の割合で表します。スイートスポット（220〜235 W、FTPの88〜94%）はテンポとスレッショルドの間に位置し、中程度の疲労で高いトレーニング刺激を与えます。
FTPは理論上約1時間維持できるパワーです。4〜6週ごとに再テストしてください。古いFTPはすべてのゾーンを狂わせます。

パーソナライズされた結果のPDFと、いつでも再表示できるQRコード付き。

How do I improve my watts per kilogram?

Two levers: raise FTP or lower body weight.

Raising FTP takes consistent volume, structured threshold and tempo work, and enough recovery to absorb it. Losing weight only helps if the weight is excess and your power stays intact. For most riders, building the engine beats cutting weight. Aggressive dieting costs power, energy and health, and can drag FTP down faster than the weight comes off. It can also tip into disordered eating. If you have excess weight to lose, do it gradually and well fuelled. Train first, let body composition follow.

Sources

Allen and Coggan, Training and Racing with a Power Meter (FTP definition and power profile categories)