Framing & Structure
Studs, joists, lumber, rebar, drywall and insulation by quantity — not by capacity.
- Board Foot Calculator Board feet from nominal size, length and piece count, with the cost at a per-board-foot price.
- Dead Load Calculator The permanent self-weight of a floor, wall or roof build-up, in kg/m², kN/m² and psf, plus the total over an area. Weight only — not a capacity check.
- Drywall Calculator Plasterboard sheets for walls and ceiling, with the screws, joint tape and compound to finish them.
- Floor Joist Calculator How many joists a floor needs at a given spacing, with their length, doublers and blocking. Count and length only — the joist size comes from a span table.
- Insulation Calculator (R-Value) R-value from insulation thickness and material, the thickness needed to hit a target R, and the rolls or boards to cover an area.
- Lumber Calculator Pieces of lumber from a total run and a stock length, with the waste from cutting and the cost.
- Rebar Calculator Rebar for a slab or footing grid — bars each way, total length, weight and stock lengths, from the spacing you have been given.
- Steel Weight Calculator Weight of steel plate, bar, pipe and tube from the dimensions, with aluminium, stainless and brass as alternatives.
- Wall Stud Calculator Studs, plates, headers and noggins for a framed wall, from its length, stud spacing and openings.