Bicycle Gear Head

Brought to you by TheDoty.com

Bicycle Gear Head is the most comprehensive bicycle gear calculator for the iPhone! Calculate your entire drivetrain at once and see the results in real-time. It shows you gear inches, MPH, and many others for all chainrings and sprockets in one awesome table.

Fun and easy to use! If you work in a bicycle shop or are building a bike of your own, you need this app! Results are updated in real time, allowing you to quickly find the perfect combination.

Video Introduction and Instructions

Features

Generate a beautiful custom results table in seconds that can be shown to customers, sent in an email, or displayed on a web page.

Adjustable:

Wheel Size
Crank Length
Chainrings
Sprockets
Pre-made cassettes or custom

Results Show:

Gear Inches
Gain Ratio
Meters Development
MPH at 60, 70, 80, 90, 100, 110, and 120 RPM
KPH at 60, 70, 80, 90, 100, 110, and 120 RPM

Screen Shots

bicycle gear head gear calculator entry screen

bicycle gear head gear calculator gear inches

bicycle gear head gear calculator entry screen custom sprocket

bicycle gear head gear calculator gain ratio

bicycle gear head gear calculator kph metric