Construction
Concrete, paint, materials and surfaces
6 calculators
In this category
Area Find the area and perimeter of nine common shapes, entering each dimension in whatever unit you have to hand. Volume Find the volume and capacity of eight solids, from a packing box to a cylindrical tank, in any unit you need. Right triangle Solve a right triangle from any two measurements: the missing side, both angles, the area and the perimeter. Concrete dimensioning Concrete volume and cement bags, sand and gravel from a slab size and mix ratio. Beam bending Reactions, shear and maximum bending moment for a simply supported beam. Earthwork volume Excavation or backfill volume from an area and depth, with a swell or compaction factor.
Estimate the materials a job needs: volume of concrete, number of bags, litres of paint, floor area, gravel or mulch.
Estimates include an adjustable waste allowance, because a real site always produces offcuts. Check the coverage figures on your own products before ordering.