Pitch & Span

Pitch & Span

Roof and framing math, done right.

13 free calculators for roof framing, roofing takeoff, and lumber math. Built for the job site: fast, no signup, with a live diagram on every geometry tool.

Popular project hubs

Pick the job, not just the tool — each hub links the calculators that go together.

Roofing

Geometry

Framing & Lumber