Online cycling tools
Bike fit calculator.
Build a baseline fit and geometry shortlist from body measurements. Verify with bike geometry charts and real riding comfort.
Rider
Measurements
Height
Stand tall against a wall. Keep shoes off and mark the top of your head.
Inseam
Use a book level against the wall to mimic saddle pressure, then measure floor to top.
Shoulder and reach
Measure shoulder width across the bony points. Arm span helps estimate cockpit reach.
Platform
Bike type
Priority
Posture
Saddle height
Measure from bottom bracket center to saddle top.
Cockpit
Use reach, stem, and bar width as a starting shortlist.
Component setup
Compare these estimates with geometry charts and your current bike before buying parts.
Saddle range
737-747 mm
Geometry range
53.6-55.6 cm
Stem range
85-105 mm
Bar width
400 mm
Setback
63 mm
Crank
172.5 mm
Why this changed
How to use this
Set saddle height first, then make small changes in 3-5 mm steps.
Use the frame result as a geometry shortlist. Stack and reach matter more than labels.
Comfort wins. Numb hands, knee pain, or hip rocking means the setup needs revision.
Next step
Use fit numbers to avoid wrong-size parts.
Before ordering bars, stems, saddles, cranks, or a frame, compare the result with your current bike and how you actually ride.
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