Framing Calculators

Framing is the skeleton of every building. Getting material quantities right means understanding on-center spacing, board feet calculations, and structural sizing requirements. These calculators cover wall framing, floor systems, roof trusses, and the lumber needed to build them.

Note: structural sizing (beam depth, joist span ratings) depends on species, grade, and load conditions. Our beam calculator provides estimates based on SPF #2 at standard residential loads. Always verify structural members with an engineer or span tables for your specific lumber species.

All Framing Tools

Framing Quick Reference

• 16" O.C. = standard stud/joist spacing for most residential construction
• 24" O.C. = used for some wall framing and roof trusses (check local code)
• 2x4 actual = 1.5" x 3.5" | 2x6 actual = 1.5" x 5.5"
• 2x10 actual = 1.5" x 9.25" | 2x12 actual = 1.5" x 11.25"
• Board feet = (thickness" x width" x length') / 12
• Double top plate: always 2 plates on top, 1 on bottom (3x wall length total)

Disclaimer

These calculators provide estimates only. Structural sizing (beam depth, joist spans) depends on lumber species, grade, and loading conditions that vary by project. Always verify structural members with a licensed engineer or published span tables for your specific lumber. See our Terms of Use.