Take a clear side photo
Place the bike on a trainer or stable surface, position the camera at saddle height, and capture your full riding position.
AI bike fit app
Free AI bike fit app for online bike fit analysis
BikeFittr is a free AI bike fit app that analyzes your riding position from a photo. Check saddle height, knee angle, cockpit reach, handlebar setup, crank length context, and overall bike fit in minutes without booking a studio session.
Best for
DIY bike fit at home
- Analyze your bike fit from a side-view riding photo
- Get saddle height, KOPS, cockpit reach, knee angle, and full-fit workflows
- Move from AI analysis into focused calculators for crank length, saddle height, and handlebar reach
- Works for road bikes, gravel, MTB, city bikes, and triathlon setups
Let AI measure key angles
BikeFittr detects body landmarks and evaluates knee angle, hip angle, back angle, saddle height, and reach based on the selected fitting workflow. Use the angle chart and calculators afterward when one number needs a focused check.
Adjust and re-check
Apply the suggested changes in small steps, then repeat the analysis. If you are chasing a lower pro-style position, compare the result with the comfort vs performance guide and calculator pages before going more aggressive.
Common questions
Is an AI bike fit accurate enough?
An AI bike fit app is useful for checking common setup issues like saddle height, knee angle, cockpit reach, handlebar setup, and visible posture problems. It is not a medical diagnosis, but it is a strong first pass before paying for an in-person fit.
What do I need for an online bike fit?
You need a phone or camera, good lighting, fitted cycling clothing, and a stable bike setup. A trainer gives the best result because your riding position stays repeatable.
Which bike fit should I start with?
Start with saddle height because it affects knee angle, hip comfort, and the rest of the fit. Then check saddle offset, crank length, handlebar width, and cockpit reach. If you compare your position with pro rider bike fit stats, use those numbers as context instead of targets.
Is this a bike fit AI tool or a calculator?
BikeFittr combines bike fit AI analysis with dedicated calculators. Use the AI bike fit app for the overall position, then use the crank length, saddle height, bike fit angle chart, and handlebar reach calculators for focused setup decisions.