Upload a side-on photo or video of the rider on the bike. Auto-detect finds the joints (video averages across the pedal stroke for accuracy — more reliable than a still), or drag the dots yourself. Read the real joint angles (no scale needed), then Apply to rider model so the figure on the bikes becomes this rider.

General static-fit guidance from common bike-fitter ranges (road / gravel) — not a substitute for a professional fit. Uses the current rider model and each bike’s saddle/cockpit.

Model-predicted adjustments to bring the rider into common fit ranges, in the order to make them (saddle height → fore/aft → cockpit), each with the predicted result. Each step’s starting number assumes the steps above it are already made (so it can read differently from the Fit Check’s current snapshot). Targets are typical published fitter ranges — to be sourced/refined to your fit philosophy. Decision-support, not a substitute for a pro fit.

Generate a branded one-page report — rider, position on the bike, measured angles, and the recommended adjustments — to hand or send to the rider (e.g. for a remote video fit). Prints or saves as PDF through your browser.

Each shown bike plotted by frame reach (across) and stack (up). Bikes that sit close together fit alike; lower-right = longer/lower, upper-left = shorter/taller.

Where each bike puts your hands relative to the saddle — reach across, drop down. Filled dot = hood, ring = drops. Clustered = same hand position; lower-right = longer & lower (more aggressive).

Pick a model — for the current rider it sweeps every size and suggests the best fit (neutral 100 mm stem, 20 mm spacers, saddle auto-set to the rider). A starting point, then fine-tune stem/spacers.

Save this whole comparison (bikes, cockpits, rider & notes) on this device and reload it later.