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Intensity Factor Calculator | Sports Calculator
Intensity Factor Calculator - IF = NP / FTP
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.
Intensity Factor Calculator
IF = NP / FTP.
Methodology
IF = NP / FTP. IF > 1.0 means above threshold effort. Race IF: TT ~1.05, criterium ~0.95, endurance ~0.65.
FAQ
How does this calculator work?
IF = NP / FTP. IF > 1.0 means above threshold effort. Race IF: TT ~1.05, criterium ~0.95, endurance ~0.65.
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.