Roof pitch visualizer and calculator.
See any roof pitch drawn to true scale, then read it as rise/run, as an angle in degrees, and as the slope multiplier used to work out true sloped area. Drag the slider — the roof redraws as you go — or compare the common pitches below.
Common roof pitches, side by side
Every roof below is drawn at the same scale, so the angles are real: 12/12 is a 45° diagonal, 6/12 is the typical American house, and 3/12 reads as nearly flat from the street. To recognise your own roof from the ground, see roof pitch examples.
Roof pitch questions.
What does '6/12 pitch' mean?
It means the roof rises 6 inches vertically for every 12 inches of horizontal run. 6/12 is one of the most common pitches on US homes.
How do I convert pitch to degrees?
Use arctangent: degrees = arctan(rise / run). For 6/12, that's arctan(6/12) ≈ 26.57°. The calculator does this automatically.
What is the pitch multiplier?
It's the factor you multiply your building footprint by to get the actual sloped roof area. For 6/12 pitch it's about 1.118 — meaning the sloped surface is 11.8% larger than the flat footprint.
What pitch counts as 'walkable'?
Pitches up to 6/12 (~26.6°) are generally walkable without harnesses. 7/12–9/12 require caution and proper PPE. 10/12 and steeper need roof brackets, scaffolding, or fall arrest systems.
Pitch detection — automatic — built into SatelliteQuotes.
Stop measuring pitches by hand. The full SatelliteQuotes app detects roof pitch from satellite imagery and applies the multiplier automatically.
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