1. What is Power to Weight Ratio?

Power to Weight Ratio (PWR) is a key performance metric in cycling that measures a rider's power output relative to their body weight. It's expressed in watts per kilogram (W/kg) and is crucial for climbing performance.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• \( P \) — Power output in watts (W)
• \( m \) — Rider's weight in kilograms (kg)

Explanation: The ratio shows how many watts of power a cyclist can produce for each kilogram of body weight.

3. Importance of PWR in Cycling

Details: PWR is especially important for climbing, where gravity has a significant impact. Higher PWR means better climbing performance. Professional cyclists often have PWRs of 6+ W/kg for short durations.

4. Using the Calculator

Tips: Enter your power output in watts and your weight in kilograms. Both values must be positive numbers. The calculator will compute your power to weight ratio in W/kg.

5. Frequently Asked Questions (FAQ)

Q1: What is a good power to weight ratio?
A: For recreational cyclists, 2-3 W/kg is typical. Competitive cyclists aim for 4-5 W/kg, while elite racers achieve 6+ W/kg for short efforts.

Q2: Does PWR matter on flat terrain?
A: Less than in climbing. On flats, absolute power and aerodynamics become more important factors.

Q3: How can I improve my PWR?
A: Either increase your power output through training, or decrease your body weight (fat, not muscle), or both.

Q4: Should I use my total weight or just body weight?
A: For most purposes, use your total body weight. Some calculations may include bike weight for complete system PWR.

Q5: How long can I sustain a given PWR?
A: Duration depends on fitness. A cyclist might sustain 3 W/kg for hours, 5 W/kg for 30-60 minutes, and 7 W/kg for only a few minutes.