RoofAngler

Free roof pitch calculator for angle, slope, and rafter length with a live diagram.

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RoofAngler is a free calculator for homeowners, contractors, and roofers that converts between rise/run, angle in degrees, or pitch ratio to instantly get pitch ratio, slope percentage, rafter multiplier, and rafter length, with a live SVG roof diagram and a reference chart of common pitches. It runs entirely in the browser with no account needed. It's aimed at anyone doing roofing calculations who wants a quick, visual, free tool instead of manual math.

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Problem & pain-point mapping
Who we surface it to (audience fit)
What it's a strong alternative to
Trust & credibility signals

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