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Bike Size Calculator | Sports Calculator
Bike Size Calculator - Frame size from inseam: Road = inseam x 0
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.
Bike Size Calculator
Frame size from inseam: Road = inseam x 0.
Methodology
Frame size from inseam: Road = inseam x 0.665, MTB = inseam x 0.59. Adjusted by torso length and riding style.
FAQ
How does this calculator work?
Frame size from inseam: Road = inseam x 0.665, MTB = inseam x 0.59. Adjusted by torso length and riding style.
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.