About Bike Sizes Chart

Our Mission: Precision Cycling Starts Here

At Bike Sizes Chart, we believe the single most important factor in cycling performance and comfort is the correct bike fit. Our mission is to transform confusing manufacturer sizing tables and complex geometry metrics into clear, actionable advice so every rider—from the novice commuter to the seasoned racer—can find their perfect frame size with absolute confidence.

The Bike Sizing Problem We Solve

Sizing a bicycle is rarely as simple as checking your height. Frame dimensions can vary wildly between brands and even between different models from the same brand (e.g., a "Medium" road bike vs. a "Medium" mountain bike). We cut through the confusion by aggregating and analyzing hundreds of proprietary manufacturer sizing guides.

Eliminating Guesswork: We consolidate unique sizing standards for dozens of major brands into one place, saving you hours of cross-referencing.

Geometry Analysis: Our content moves beyond simple height recommendations, focusing on critical metrics like **Stack and Reach** to give you a true indication of fit and riding posture.

Proportional Fitting: Our calculator (and accompanying guides) accounts for body proportions—not just height—ensuring a recommendation that works for your unique anatomy.

Expert Insights: We provide original commentary on specific frame lines, helping you choose between sizes when you are "between" recommendations.

Our Commitment to Expertise

Our content and sizing tools are developed and maintained by a team of dedicated cycling professionals. We are committed to providing information rooted in real-world fitting experience and deep knowledge of bicycle engineering. Meet the key contributors who ensure our data is accurate and our advice is expert-level:

Jamie C. (Lead Fitter & Analyst)

Certified Bike Fitter (Retül) | Geometry Specialist

Jamie leads our data aggregation and geometry analysis, ensuring our comparison tools are accurate. With over 10 years experience as a certified bike fitter, Jamie understands how minor frame differences affect long-term comfort and performance.

Alex R. (Technical Editor)

Mechanical Engineer | Cycling Journalist

Alex focuses on editorial quality and technical accuracy. His background in mechanical engineering allows us to break down complex bicycle geometry concepts into easy-to-understand guides for all levels of cyclists.

Contact & Trust

Your trust is our priority. If you have questions about a specific brand's sizing, our methodology, or need to report an error, please reach out to us directly. We are constantly updating our charts and analysis to reflect the latest model year changes.

Email: support@bikesizeschart.com
Address: 365, Adoavile, CA 90210