Roof Pitch Calculator
Free roof pitch calculator — enter rise & run, angle, or pitch ratio to get pitch, slope, and rafter length instantly.
VisitPublished on:
May 5, 2026
Pricing:

About Roof Pitch Calculator
Roof Pitch Calculator is a free browser-based tool for homeowners, contractors, and roofers. Enter rise and run, a degree angle, or a pitch ratio (X:12) to instantly calculate pitch ratio, angle in degrees, slope percentage, rafter multiplier, and rafter length. Features include a live SVG roof diagram, a reference chart of 20+ common roof pitches, and a blog with roofing guides. All calculations run in the browser — no account, no ads, no data collected.
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