Free Tool
CTL (Fitness) Calculator | Sports Calculator
CTL (Fitness) Calculator - Chronic Training Load: 42-day exponentially weighted avg of daily TSS
CTL (Fitness) Calculator
Chronic Training Load: 42-day exponentially weighted avg of daily TSS.
Methodology
Chronic Training Load: 42-day exponentially weighted avg of daily TSS. Higher CTL = higher fitness. Build ~5-7 TSS/week for safe progression.
FAQ
How does this calculator work?
Chronic Training Load: 42-day exponentially weighted avg of daily TSS. Higher CTL = higher fitness. Build ~5-7 TSS/week for safe progression.
How accurate is this?
Based on established sports science formulas and research.
Who should use this?
Athletes, coaches, and fitness enthusiasts of all levels.
Should I consult a professional?
Yes, especially before major changes to training or for health conditions.
Results are estimates. Consult a professional for personalized guidance.
Done calculating? Start training.
Turn these numbers into an AI-built plan that adapts weekly.
Build My Plan →By the maker of 170+ free training calculators