1. What is FTP Zone?

FTP (Functional Threshold Power) zones are power ranges used in cycling training to target specific physiological adaptations. Each zone corresponds to a percentage of your FTP and is used for different types of workouts.

2. How Does the Calculator Work?

The calculator uses the FTP zone equation:

Where:

• \( ftp \) — Functional Threshold Power in watts
• \( zone\_percentage \) — The percentage of FTP for the desired zone (decimal)

Explanation: The equation calculates the power output corresponding to a specific training zone based on your FTP.

3. Importance of FTP Zones

Details: Training in specific FTP zones helps cyclists target different energy systems, improve performance, and track progress. Common zones include endurance, tempo, threshold, VO2 max, and anaerobic capacity.

4. Using the Calculator

Tips: Enter your current FTP in watts and the desired zone percentage (e.g., 0.85 for 85% of FTP). All values must be valid (FTP > 0, percentage between 0-2).

5. Frequently Asked Questions (FAQ)

Q1: What is Functional Threshold Power (FTP)?
A: FTP is the highest power you can sustain for approximately one hour, representing your cycling fitness level.

Q2: What are typical FTP zone percentages?
A: Common zones: Zone 1 (≤55%), Zone 2 (56-75%), Zone 3 (76-90%), Zone 4 (91-105%), Zone 5 (106-120%), Zone 6 (≥121%).

Q3: How often should I test my FTP?
A: Typically every 4-8 weeks, as your fitness improves. Testing too frequently won't show meaningful changes.

Q4: Can I use this for running?
A: While similar concepts exist for running, this calculator is specifically designed for cycling power zones.

Q5: Should I always train in the same zone?
A: No, effective training programs incorporate workouts across different zones to develop various aspects of fitness.