1. What is Power to Weight Ratio?

The power-to-weight ratio (W/kg) is a key performance metric in cycling that measures a rider's power output relative to their body weight. It's a crucial factor in determining cycling performance, especially on climbs.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• \( W/kg \) — Power to weight ratio (watts per kilogram)
• \( P \) — Power output (watts)
• \( m \) — Rider's mass (kilograms)

Explanation: The formula divides the rider's power output by their body weight to determine how many watts they can produce per kilogram of body weight.

3. Importance of Power to Weight Ratio

Details: This ratio is particularly important for climbing performance, as gravity affects heavier riders more. Higher ratios generally indicate better climbing ability. Professional cyclists often have ratios of 6+ W/kg for short efforts.

4. Using the Calculator

Tips: Enter your power output in watts (measured with a power meter) and your body weight in kilograms. For accurate results, use your current weight and recent power data.

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 might achieve 4-5 W/kg, while elite riders can exceed 6 W/kg for short durations.

Q2: Does this ratio matter on flat terrain?
A: Less so than on climbs. On flat terrain, absolute power and aerodynamics become more important factors.

Q3: How can I improve my power-to-weight ratio?
A: Either increase your power output through training or decrease your body weight (fat, not muscle) through nutrition and exercise.

Q4: Should I use FTP or peak power for this calculation?
A: Typically use your Functional Threshold Power (FTP - the power you can sustain for 1 hour) for endurance comparisons, or peak power for shorter efforts.

Q5: How does this compare between men and women?
A: Elite women typically have slightly lower absolute power but similar power-to-weight ratios to elite men.