▼ Welcome to XY Bike Calc

Explore our precision tools for bike fitting, geometry calculations, and component selection. Stop guessing, start calculating.

Latest Updates

July 28, 2025
  • Renamed "HX/HY to Frame Calculator" to "Stack & Reach Calculator" and updated the calculator to include sliders for input value adjustment and added a visual aid to the calculator
  • Created a new separate Seatpost Calculator with a visual aid to help calculate seatpost length, angle, and other values
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X/Y Position Calculator

Calculate precise handlebar positions on any bike and compare multiple configurations at the same time.

Open XY Position Calculator
📐

Stack & Reach Calculator

Convert handlebar X/Y coordinates to frame measurements. Determine stack and reach values needed to achieve your desired position.

Open Stack & Reach Calculator
🔢

Stem Calculator

Calculate and compare the effect of different stem configurations.

Open Stem Calculator
🔍

Bike Search

Search our database of bikes based on your desired Stack and Reach figures.

Search Bikes

New to XY Bike Calc?

Our guide will help define what "XY" values mean so you can get the most out of our powerful yet simple XY Position Calculator.

Read the Guide