🚴♂️ E-Bike Fit Optimizer (Ergo-AI) — Basic
Achieving the perfect bike fit is essential for comfort, efficiency, and injury prevention while riding your e-bike. The E-Bike Fit Optimizer (Ergo-AI Basic) quickly calculates saddle height, handlebar position, and frame-size range based on your body metrics and riding style — all client-side, no external APIs required.
With RideWattly’s Ergo-AI tool, riders can instantly get tailored recommendations whether they are commuting in the city, riding for fitness, exploring trails, or cruising leisurely. The tool adapts to different bike types and riding styles to ensure a smooth, ergonomic ride.
Enter your height, weight, and preferred riding style, and let the E-Bike Fit Optimizer suggest a setup that maximizes comfort and pedaling efficiency. Fine-tune your fit with easy-to-follow guidelines for saddle and handlebar adjustments, and understand the rationale behind each recommendation.
Enter simple body metrics and riding style. This client-side tool returns recommended saddle height, frame-size range, and handlebar height/angle. No external APIs required.
How the calculator works
Saddle height: uses the LeMond formula — saddle = inseam × 0.883. If you don't know your inseam we estimate inseam = height × 0.46 (typical adult proportion) then apply the formula.
Frame size: gives approximate frame size ranges based on standing height and bike type. These are general guidelines — brand geometry varies.
Handlebar height & angle: recommended relative to saddle based on riding style (upright vs aggressive vs trail).
FAQs & Tips
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The tool calculates optimal saddle height, handlebar height and angle, and frame-size range based on your body measurements and riding style.
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No — if you don’t know your inseam, the tool estimates it from your height using standard adult body proportions.
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The recommendations provide general guidance for hybrid, road, mountain, and step-through bikes. Individual geometry may vary by brand, so test rides are recommended.
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Yes, you can choose from Urban/Commuter, Fitness/Road, Mountain/Trail, or Leisure/Cruiser styles, and the tool adjusts handlebar and saddle recommendations accordingly.
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No, this tool runs entirely in your browser — nothing is stored or transmitted externally.
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Yes, RideWattly provides this tool for free to help riders optimize their e-bike setup safely and efficiently.
Advanced FAQs & Pro Tips
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The tool estimates inseam using a standard proportion of height (inseam ≈ height × 0.46) before applying the LeMond formula for saddle height.
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Yes, use the suggested saddle height as a starting point and adjust ±10–20mm to achieve optimal pedaling comfort and leg extension.
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Upright styles raise the handlebars relative to the saddle for comfort, aggressive fitness or road styles lower the handlebars for aerodynamics, and trail/mountain setups balance control and posture.
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Yes, hybrid, road, mountain, and step-through frames have different geometries. The tool provides general ranges, but always verify fit with a test ride if possible.
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It’s intended as a guideline for ergonomic setup. For injury prevention or performance optimization, consider a professional fitting or advanced motion capture analysis.
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Stand barefoot against a wall with feet ~15–20cm apart. Measure height from floor to the top of your head, and inseam from crotch to floor using a book or flat object to mimic saddle contact.
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Re-evaluate your setup after significant weight changes, new bike purchases, or changes in riding style to maintain optimal comfort and efficiency.
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No, all calculations are done client-side. No data is stored, transmitted, or shared externally.
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This tool is part of the educational resources published on RideWattly. Results should be used as a reference only and not as professional engineering advice.