Estimate how many screws or nails a sheathing job needs.
On a regular grid, the number of fasteners per square foot is one hundred forty-four divided by the spacing squared. Multiplying by the area and a waste allowance, then rounding, gives the total. Sheathing and panels specify fastener spacing, so counting by area avoids buying far too many or running short.
Fastener Count
Fasteners/sq ft = 144 / spacing^2; total = area x per sq ft x (1 + waste)
Fasteners/sq ft = 144 / spacing^2; total = area x per sq ft x (1 + waste) On a regular grid, the number of fasteners per square foot is one hundred forty-four divided by the spacing squared. Multiplying by the area and a waste allowance, then rounding, gives the total.
Sheathing and panels specify fastener spacing, so counting by area avoids buying far too many or running short.
This calculator takes 4 inputs: Area, Fastener spacing, Fasteners per box, Waste allowance. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.