Free Tool
Cycling TSS Calculator | Sports Calculator
Cycling TSS Calculator - TSS = (duration_sec x NP x IF) / (FTP x 3600) x 100
Built by an engineer who chases finish lines and is obsessed with data. Thomas Prommer — technology executive who has worked with Google, Apple, Nike, Adidas, Netflix and other global brands. Also an Ironman finisher, HYROX Pro Division competitor, and marathon runner. These tools combine engineering rigor with real race experience.
Cycling TSS Calculator
TSS = (duration_sec x NP x IF) / (FTP x 3600) x 100.
Methodology
TSS = (duration_sec x NP x IF) / (FTP x 3600) x 100. Measures training load. 150 = easy day, 300 = moderate, 450+ = hard.
FAQ
How does this calculator work?
TSS = (duration_sec x NP x IF) / (FTP x 3600) x 100. Measures training load. 150 = easy day, 300 = moderate, 450+ = hard.
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.