- General
- Stem Chart – helps you visualize your current stem and where a new stem might place your bars
- Bike Stem Calculator – no visualization but handy nontheless
- Bike-alog’s BikePedia – find out what components came on a bike. Goes back to 1993.
- Rabbit, a singlespeed and fixed-gear cycling calculator – Java Applet
- Wheelbuilding
- Free Bike Tools Spoke Calculator
- WheelCalc – Windows Application
- Spocalc – Excel Spreadsheet
- Spoke Calculator — Comprehensive but doesn’t give you the ability to store your own rim and hub values
- Spokulator
- WheelBuilder.com — Wheel component weight database
- Weight Weenies — User-submitted weight database
- Construction
Free Bike Tools
Free online tools to help you work on your bicycle