Getting started
Using photo and video position analysis
Upload a side-on photo or short clip and get fit observations tied to CdA.
Good captures
Shoot exactly side-on at hip height, on a trainer or steady road, in your normal riding kit. Clips are sampled into a few frames automatically.
What you get
Observations about back angle, head, arms and hands, plus an estimated CdA and watts impact. Apply the estimate to a bike to use it in Calculator and Time Delta, or remove it any time.
Limits
These are visual estimates, not wind-tunnel measurements. Ride data refines them over time.
Try it on your own rides
Start free →