Rafter & Roof Pitch Calculator

Find rafter length, rise, slope factor, and angle from the roof pitch, run, and overhang.

Roof

Pitch (rise /12)

e.g. 6 = 6:12

Run (ft)

Half-span

Overhang (ft)

Rafter

Rafter Length14.534 ft

Rise6 ft

Slope Factor1.118

Angle26.57°

Length along the slope incl. overhang; add for ridge thickness and tail/birdsmouth as needed.

Run your whole job on the same numbers

These NORDIX tools are a taste of the full platform — bid pipeline, estimating, and job costing that carry your numbers from the first bid to the final invoice.

See what NORDIX does →