Rafter Help is a user-friendly application that provides you with the easiest way to calculate rafter length and associated values when building. If you're looking for a solution to quickly find roof pitch, rafter lengths, and ridge height for gable roofs based on room and ridge width, then Rafter Help is the perfect application for you. With the Advanced tab, you can calculate length values with more control.

This app accurately solves rafter equations and allows you to enter pitch steepness in radians, decimal degrees, degrees, minutes, seconds (DMS), or rise/run. You can also enter lengths in mm, cm, inches, or feet. With the option to select your preferred number of decimal places, this app is perfect for professional builders and DIY enthusiasts alike.