XY Bike Calc is a collection of tools created for cycling professionals (bike fitters, coaches, mechanics) and enthusiasts alike to make the process of pre-purchase fitting and bike "prescription" more efficient and precise.
The database of bikes is far from comprehensive and primarily consists of drop bar bikes released in the last several years, but will continually be updated as new bikes are released or as requests are made.
About the Creator
I'm a professional bike fitter based in San Francisco, CA. I understand the challenges and needs of industry professionals and wanted to create tools to help answer common questions we face in our daily work.
The Tools
- X/Y Position Calculator: Calculate and compare handlebar positions to understand how to match positions between different bikes.
- Bike Position Simulator: Simulate and visualize saddle and handlebar positions.
- Stack & Reach Calculator: Convert a desired handlebar position (HX/HY) to frame stack and reach dimensions.
- Seatpost Calculator: Calculate seatpost setback and length requirements based on your target saddle position.
- Stem Calculator: Compare changes in stem parameters such as stem clamp height, length, angle, and spacers. For example, what happens if I flip the stem from -6° to +6° and remove 5mm of spacers??
- Bike Search: Find bikes that match your desired stack and reach measurements.