Calculate roof decking with incredible precision with this free app. Based on the knowledge of the roof pitch and the length of one known side. Works with any pitch or combination of pitches on 4′ x 8′ sheets of plywood. You should have at least some experience with decking roofs before going any further. There are […]

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# Construction Calculator

## Calculate the rafter run by the known rise

Use this free app to calculate the run for any rafter in feet and inches, or just inches. Based on any roof pitch and any known rise. The run is the horizontal distance a rafter travels. Learn how to perform this necessary task with ease and precision. Install now: iOS download Android download Calculate rafter […]

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## How to calculate the rise for rafters

Calculate the rise for rafters with any run and any pitch using feet and inches, inches or just a decimal value with ease and precision for free. It is often necessary to establish the the rise for a particular run and roof pitch. This is so important for ridge posts and knee walls. Build your […]

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## Calculate rafters with free app

Calculate the length of common rafters in feet, inches, and fractions – faster, easier, and more reliably than ever before. Install now: iOS download Android download The three things you need are: Roof width This dimension is the distance from the outside of the wall to the outside of wall where the HAP stops. This […]

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## Determine the pitch of a rafter

Find the pitch of any bastard pitch rafter with incredible ease and accuracy with the free Builder Fraction Calculator app. Learn how to determine the roof pitch equivalent for any known rise and known run with the workshop below. This way you can use a framing square to get more precise cuts on rafters and […]

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## Roof pitch to degrees

Convert roof pitches, or any slope to degrees, faster and easier than ever before with the Builder Fraction Calculator free app. It is useful to know how to convert slopes into degrees so you know what bevel to set your saw on for things like gable studs. Practice the workshop below to help establish a […]

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