Free construction calculators

Estimate quantities in seconds, then turn the result into a quote request to verified suppliers.

Concrete Calculator

Volume of concrete plus cement, sand and aggregate for slabs, footings and columns.

Cement bags and sand for plaster, screed and block-work mortar.

Number of blocks or bricks for a wall, with openings and mortar joints.

Tiles, boxes and grout allowance for floors and walls.

Litres of paint for walls and ceilings, with openings and coats.

Weight of reinforcement bars by diameter, length and count.

Area of rectangles, circles and triangles in square metres and square feet.

Total quantity to order from coverage rate, area and wastage.

Indicative cement, steel, sand, aggregate and block quantities from built-up area.