What is the Roof Pitch Calculator?
Roof pitch describes how steep a roof is – as “rise in 12” (e.g. 6/12), an angle in degrees or a percentage. Enter rise and run (or the angle), plus the building width and length, to get all pitch formats, the rafter length (with overhang) and total roof area for ordering sheets or tiles.
How to use the Roof Pitch Calculator
- Enter rise and run (same units) – or choose angle mode.
- Enter building span and length, plus overhang.
- Read pitch, rafter length and roof area.
Common pitches
- 3/12 (14°) – low slope, sheets
- 6/12 (26.6°) – common for tiles
- 12/12 (45°) – steep
This Roof Pitch Calculator is 100% free, needs no signup and runs privately in your browser – on phone, tablet or computer.
Last updated: · By NodifyTech