— Saddle Height (cm from pedal to saddle top)
— Handlebar Reach (cm, saddle nose to bar center)
— Handlebar Height Guidance
Methodology
Saddle height uses the LeMond method (Greg LeMond, 1987): saddle height = inseam × 0.883, measured from the center of the pedal at the bottom of the stroke to the top of the saddle. Handlebar reach is estimated from standing height × 0.42 — a shorter, more upright ratio than road-bike reach formulas, reflecting the seated, stationary position on a spin bike. Handlebar height guidance follows standard indoor-cycling setup practice: level with or slightly above the saddle for a sustainable, comfort-first position, lower only if you're used to an aggressive road position. These are starting points, not a substitute for a professional fit — verify on the actual bike using the classic checks: full leg extension with a slight knee bend at the bottom of the pedal stroke, and the front of your kneecap tracking over the pedal axle when the crank is horizontal (3 o'clock).
FAQ
What saddle height should I use on a spin bike?
Multiply your inseam (floor to crotch, no shoes, in cm) by 0.883 — that's the LeMond method, and it gives you the distance from the center of the pedal at the bottom of the stroke to the top of the saddle. A 80 cm inseam gives roughly 70.6 cm. Fine-tune from there: at the bottom of the pedal stroke your knee should have a slight bend (not locked straight), and your hips shouldn't rock side to side.
How do I set up an indoor cycling bike for my height?
Start with saddle height from the LeMond formula (inseam × 0.883), then set the saddle fore/aft so the front of your kneecap sits directly over the pedal axle when the crank is horizontal (3 o'clock position) — check with a plumb line if you have one. Set the handlebars level with or slightly above the saddle for a comfortable, sustainable position; only drop them lower if you're already used to an aggressive road-bike posture.
What is the ideal handlebar reach for indoor cycling?
A reasonable starting estimate is your height × 0.42, measured from the saddle nose to the center of the handlebar. This is shorter than a road-bike reach formula because indoor positions are more upright and the bike never has to handle at speed. Adjust from there based on comfort — indoor bikes are ridden seated for long, steady blocks, so a slightly shorter reach that keeps your back more open is usually more sustainable than a race-bike reach.
Does this work for Peloton, Technogym, and other bike brands?
Yes — the output is in real centimeters (pedal to saddle top, saddle to bar), which is universal across bike brands. What differs by brand and model is how those centimeters map onto that specific bike's notch or number scale, since manufacturers don't publish a cm-to-notch conversion chart. Use the cm numbers to get close, then fine-tune with the on-bike checks in the methodology above.
How accurate is this calculator?
The saddle-height formula (LeMond method) is a widely used, well-established starting point in cycling, typically accurate to within a couple of centimeters for most body types. The handlebar-reach estimate is a simpler proportional approximation and should be treated as a rougher starting guess. Both benefit from on-bike verification — a professional bike fit will always be more precise than any calculator.
Should I consult a professional?
For occasional studio classes, these formulas are normally enough to get you close. If you're doing serious indoor training volume, have existing knee, hip, or back issues, or the numbers here feel clearly wrong on the bike, a professional bike fit is worth it — it accounts for flexibility, old injuries, and asymmetries that a height/inseam calculator can't see.
Results are estimates based on published cycling fit formulas (LeMond method) and standard indoor-cycling proportions. Every bike's notch/number scale is different — use these as a starting point, then fine-tune on the bike itself. Not medical or physical-therapy advice.
