About XY Bike Calc

XY Bike Calc is a collection of tools created for bike fitters. These tools are designed to make the bike fitting process more efficient and accurate, especially when it comes to pre-purchase fittings.

The calculators are currently free to use, but access to the bike database in the XY Position Calculator will require a subscription in the future. The database of bikes is far from comprehensive, but will continually be updated as new bikes are released.

About the Creator

I'm a professional bike fitter based in San Francisco, CA. I understand the challenges and needs of professional bike fitters. These tools were born from real-world fitting scenarios and are designed to solve common problems we face in our daily work.

The Tools

• X/Y Position Calculator:
  Calculate and compare handlebar positions (center of handlebar, HX & HY) relative to the bottom bracket.
  With a known target saddle X/Y (center of saddle rail, SX & SY) position, seatpost setback or seat mast length needs can be accurately calculated as well.
• HX/HY to Frame Calculator:
  Convert a desired handlebar position (HX/HY) to frame stack and reach dimensions.
• 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°?
• Bike Search:
  Find bikes that match your desired stack and reach measurements.

Contact

Email: admin@xybikecalc.com