FTP Calculator

Functional Threshold Power (FTP) is the highest power output you can sustain for approximately one hour. It represents the boundary between aerobic and anaerobic metabolism and is the gold standard for measuring cycling fitness. Knowing your FTP lets you train with precision by setting power-based training zones that target specific physiological adaptations.

Rather than training by feel or heart rate alone, FTP-based zones give you exact wattage targets for endurance rides, tempo work, threshold intervals, and VO₂max efforts. This removes guesswork and ensures each workout achieves its intended training stimulus.