1. What is Power-to-Weight Ratio in Cycling?

Definition: This calculator determines a cyclist's power-to-weight ratio, which measures watts produced per kilogram of body weight.

Purpose: It helps cyclists evaluate their performance potential, especially for climbing, and compare fitness levels.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \frac{P_w}{W} \) — Power-to-weight ratio (watts/kilogram)
• \( P_w \) — Power output (watts)
• \( W \) — Rider weight (kilograms)

Explanation: The power output in watts is divided by the rider's weight in kilograms to get the ratio.

3. Importance of Power-to-Weight Ratio

Details: This metric is crucial for climbing performance. Higher ratios mean better climbing ability. Professional cyclists often have ratios of 6+ W/kg for short efforts.

4. Using the Calculator

Tips: Enter your power output (from a power meter or cycling test) in watts and your weight in kg. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's a good power-to-weight ratio?
A: For recreational cyclists, 2-3 W/kg is typical. Competitive cyclists range 3-4 W/kg, while pros exceed 5 W/kg.

Q2: Should I use my total weight or just body weight?
A: For most purposes, use just your body weight. For precise bike setup, some include bike weight.

Q3: How can I improve my ratio?
A: Either increase power output through training or decrease weight (safely) through nutrition.

Q4: Does this work for different durations?
A: Yes, but ratios are typically reported for specific durations (5s, 1min, 5min, 20min, FTP).

Q5: Why is this more important than raw power?
A: Because gravity affects lighter riders less, making relative power more important than absolute power for climbing.