Bike Size Calculator
Estimate the bike frame size that fits your body, depending on bike type (road, mountain, or city bike), based on your height. A useful reference before buying, calculated directly in your browser.
How It Works
Choosing a bike that's too big or too small harms comfort and pedaling efficiency. The recommended frame size depends strongly on the bike type: road bikes usually use a frame size in centimeters, mountain bikes are often expressed in inches, and city bikes favor a more upright position with a slightly larger frame. The tool applies a common formula per bike type based on your height.
Does this result replace trying a bike in a store?
No, it's a practical starting point for comparing available sizes online or walking into a store with a clear idea. Exact geometry varies from brand to brand and model to model (top tube length, saddle height, handlebar type), so a test ride remains the best way to confirm the right fit.
Why is the mountain bike frame size expressed in inches?
It's a historical industry practice: most mountain bike manufacturers still list frame size in inches (e.g. 17" or 19"), while road bikes more often use centimeters. The tool automatically adapts to the unit commonly used for the selected bike type.
The calculation is done only in your browser: your height is never sent to a server.