AI Fit Assessment

90-SECOND FIT CHECK

Three steps: enter your body measurements, tell us your current bike, describe how you ride. We'll estimate saddle height, stem length, crank length, and where you should look for your next frame. For reference only. Not a substitute for an in-person bike fit.

3 stepsNo account neededSaves locally only

How is cycling feeling today?

One tap · stored locally · no login

Region:

Step 1

Your body

What we need to compute saddle height, stem length, and frame match.

Height *

Inseam (pubic bone to floor) *

Torso (sit bone to top of sternum)

Arm length (shoulder to wrist)

Shoulder width

Sitting height

Weight

Flexibility

Live preview

Updates as you fill in the form.

Fit score86/100

Saddle height724 mm

Stem length91 mm

Spacer stack-30 mm

Crank length177.5 mm

Bar width450 mm

Visualization

Saddle height · setback · stack · reach

Ideal frame

Reach: 495–505 mm

Stack: 408–428 mm

STA: 72.5–73.5

Posture: balanced

Posture preview

4 postures

Same body, different positions. Each row applies posture-specific deltas to the neutral recommendation so you can see how the fit shifts between climbing, flat-road, drops, and time-trial.

Flat / hoods (neutral). The baseline posture — hands on the hoods, spine ~45°. The calculator output already targets this; no adjustments needed.

Saddle

724mm

—

Stem

91mm

—

Spacer

-30mm

—

Reach

500mm

—

When: Most group rides, training rides, commutes on flat-to-rolling terrain.

Body: 175cm / 82cm inseam / average