Buying a motorcycle usually starts with a spec sheet and ends with sitting on one at a dealer. The gap between those two is where most bad purchases happen. A seat height of 805 mm (31.7 in) tells you very little about whether your knees will ache after an hour, whether you can hold the bike on a slope, or whether the bars are a stretch.
Motorcycle Ergonomics fills that gap. You enter your height and inseam, pick a bike, and see yourself on it: knee, hip and elbow angles, how your feet reach the ground, how much wind you’ll take, and which parts would make a poor fit better.
What makes it different
- Real bike geometry. Seat, bar and peg positions are measured from manufacturer data and scaled side photos wherever we can, not copied from one generic template.
- Honest labels. Every bike shows how sure we are about each number: maker spec, photo-traced or estimated. When we’re guessing, we say so.
- Your body, not an average. Inseam, arm length, torso, boots and gear all change the result.
- Fixes, not just verdicts. Try risers, lowering links, seats and pegs before you spend money on them.
- Free and private. No account, no ads, and your measurements stay in your browser.
How the numbers are made
The calculator builds a simple model of you and the bike and solves where your hips, knees, hands and feet end up. The methodology page explains the model, its comfort ranges and its limits. It’s a good estimate, not a test ride, so always sit on a bike before you buy it.
Who’s behind it
Motorcycle Ergonomics is an independent project run by Animesh Maity (SyncMethods). It isn’t affiliated with any motorcycle manufacturer, dealer or magazine. Model names are trademarks of their owners and are used only to identify the bikes. The illustrations are drawn for this site.
How it’s paid for
The site is free to use. In future some parts suggestions may link to shops that pay a small commission. If that happens it will be clearly labelled, and fixes will always be ranked by how much they help your fit, never by what they earn.
Help make it better
Most bar and footpeg positions are still estimates because manufacturers don’t publish them. If you own a bike, ten minutes with a tape measure helps every rider who checks it. See how to measure your bike, or get in touch with a correction or a bike you’d like added.