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Welcome to the Cycling Aerodynamics Calculator

Optimize Your Cycling Performance with Aerodynamic Analysis

This calculator helps cyclists analyze and improve their aerodynamic efficiency using the Chung Method. By comparing different riding positions, you can:

  • Calculate your CdA (Coefficient of Drag Area)
  • Estimate time savings in time trial scenarios
  • Analyze power savings at the same speed
  • Compare different riding positions and equipment setups

Perfect for time trialists, triathletes, and any cyclist looking to optimize their aerodynamic performance.

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Cycling Aerodynamics Calculator

Aerodynamics Calculator

Compare two riding positions to estimate aerodynamic drag (CdA) using the Chung Method.

How to Use

1. Perform two field tests (e.g., aero vs. upright position) on a flat course, recording average power, speed, and weight.

2. Enter data for Test A and Test B below. Air density and rolling resistance are pre-set for simplicity.

3. Click "Compare" to see CdA, time difference for a 10-mile time trial, and power saved.

Limitations

This calculator uses a simplified Chung Method, assuming flat terrain, steady-state riding, and no wind or elevation changes. Results are estimates and may vary in real-world conditions.

Enter A/B Test Data

Test A

Average power from your power meter.
Average speed in kilometers per hour.

Test B

Average power from your power meter.
Average speed in kilometers per hour.
×

Weight of rider, all equipment, bike, etc., in kilograms.

×

Weight of rider, all equipment, bike, etc., in kilograms.

A/B Test Results

Test CdA (m²) Power (W) Speed (kph)

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