A detailed history of updates and changes to XY Bike Calc.
Version 1.6.3
December 9, 2025
Fixed a bug in the XY Position Calculator where headset height loading/calculating incorrectly upon selecting a bike from the database
Added ability to search for bikes directly from the Stack & Reach Calculator
Version 1.6.2
December 3, 2025
Moved servers
Added Google login option for account creation and login.
Switching to Google login will remove the email/password login option for your account, but all saved data will remain
Added the ability to delete your account in the profile page (click account name on the navigation bar)
Altered highlighted input field colors in dark mode to improve readability
Improved layout responsiveness to home page and XY Position Calculator
Allowed Seat Tube Angle and Seat Tube Length values to be edited when no value is provided from the geometry database
Version 1.6.1
September 17, 2025
Updated the database and position calculators to incorporate stock cockpit and max spacer values when provided by the manufacturer. These values are highlighted in yellow in the XY Position Calculator and Bike Position Simulator
Added the ability to add a second bike to Bike Position Simulator to overlay a second bike/position for visual comparison
Added "Frame Material" as a filterable option in the Bike Search
Corrected BB to Rail calculation in XY Position Calculator (was calculating BB to SRC)
Added a section for Product Manuals currently supplied by manufacturers for easy reference
Version 1.6
August 20, 2025
Created new "Bike Position Simulator" to help users visualize both saddle and handlebar positions. This calculates and displays Cartesian and polar coordinates of the frame, saddle, and handlebar
Added "Headset Height" value inputs to XY Position Calculator, Stack & Reach Calculator, and Bike Position Simulator to differentiate between spacers and headset/transition spacer stack
Updated "Bike Search" with sliders, brand filter, and Stack/Reach Ratio filter. Added Stack/Reach Ratio to the results table. Bikes can now be added to XY Position Calculator directly from the Bike Search results table
Version 1.5.2
July 31, 2025
Fixed a bug in the XY Position Calculator visual where 0° stem angle was treated as no value and defaulted to -6°
Redrew the saddle image in the Seatpost Calculator to be shorter in height
Added "BB to Saddle XY" calculation to the Seatpost Calculator to differentiate it from "BB to Rail", which is measured along the STA
Version 1.5.1
July 30, 2025
Added a "Notes" section to each bike configuration in the XY Position Calculator to allow for additional notes about that particular bike. This will be saved to client profiles and will show up in the Print document
Version 1.5
July 28, 2025
Created a new separate Seatpost Calculator with a visual aid to help calculate seatpost length, angle, and other values
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
Version 1.4.2
July 22, 2025
Added a visual aid to the XY Position Calculator to help visualize and comparethe calculated handlebar positions
Added a 'Donate' page to support the site 🙏
Version 1.4.1
July 7, 2025
Restructured site directories and created a new start page
Version 1.4
March 20, 2025
Moved the rider information section from the top to the left column of the XY Position Calculator. Added a toggle to collapse/expand the section to create more real estate for bike comparisons
Added a "Component Notes" section to the client profiles to note other details about the equipment used or planned to be used
Added hover text to XY Position Calculator, Stem Calculator, and Stack & Reach Calculator to explain what or how values are calculated/measured
Reformatted the Print Results page to include this new component notes section
Resized and repositioned stem comparison visual in Stem Calculator for easier viewing and to prevent deformation of the graph on mobile devices
Version 1.3
March 14, 2025
Added Terms of Service
Required acknowledgement of Terms of Service and Privacy Policy during account creation
Login is now required to access XY Position Calculator database
Added "Notes" section to client profiles to note other details about the client or equipment
Added a visual aid to the Stem Calculator to more easily visualize stem comparisons
Version 1.2.1
March 9, 2025
Added "Guide" page to explain how to use the XY Position Calculator
Reformatted printed results page to more closely reflect the XY Position Calculator
Improved navigation bar code consistency in desktop and mobile views
Version 1.2
March 5, 2025
Fixed light/dark mode toggle bug on home page
Implemented account creation
Client profiles in XY Position Calculator are now saved to the cloud instead of using local browser storage and require login credentials
Optimized Load dialog to be optimized for both desktop and mobile views
Added Google Analytics tracking
Updated Privacy Policy to include Google Analytics information
Added user name to print header when available
Added site favicon
Version 1.1.1
March 1, 2024
Fixed Bike Search table so the results table doesn't resize and cut off text
Combined Target Reach/Stack and Acceptable Range inputs into one box
Added "About" page
Added public Changelog
Fixed Dark Mode toggle on XY Position Calculator
Version 1.1
March 1, 2024
Added responsiveness to improve the mobile experience
Added ability to hide description of calculator tools by clicking page title