Rafter length = run / cos(pitch angle); rafter count = ceil(building length ft x 12 / spacing in) + 1, at standard 16 in or 24 in OC.
Inputs
Results
Rafter length = run / cos(pitch angle); rafter count = ceil(building length ft x 12 / spacing in) + 1, at standard 16 in or 24 in OC.
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Roof Rafter Calculator on Neranjan Tools is an ultra-fast, client-side utility crafted to deliver professional-grade processing without the privacy risks or upload delays of traditional cloud services. Whether handling sensitive business contracts, personal photos, or code snippets, you can accomplish your task in seconds.
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Hướng dẫn từng bước
Enter Run and Rise
Input the horizontal rafter run in feet and roof rise in inches per 12 in of run.
Set Building Length & Spacing
Enter building length and choose 16 in or 24 in OC rafter spacing.
View Rafter Count & Length
Get the number of rafters needed and the length to cut each one.
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Immediate processing powered by your local device hardware with zero upload wait times.
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Works smoothly on iOS, Android, macOS, Windows, and Linux across all modern browsers.
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Neranjan Tools guarantees that Roof Rafter Calculator processes your data purely in your browser memory. We never store, log, or inspect your files, protecting you fully against virus uploads and data breaches.
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