Construction & Home Calculators
Concrete, tiles, paint, materials and household cost calculators.
Tools in this category
Concrete
Calculate the volume of concrete and the number of cement bags.
Plaster / Mortar
The materials needed for plastering by surface area.
Tiles
The number of tiles and adhesive for an area.
Paint
Litres of paint for walls by area and coats.
Flooring
Flooring material by area.
Roof
Roofing material by dimensions.
Stairs
Calculate the height and width of the steps and their number.
Sand & Gravel
The volume of sand/gravel for a job.
Mulch
Calculate how many bags of mulch you need for a flower bed, garden or trees, with a 10% allowance.
Bricks / Blocks
The number of bricks/blocks for a wall.
Area (m²)
Calculate the area in m² and the cost per square metre.
Heating (BTU)
Air conditioner/heater capacity by room size.
Electricity Bill
Estimate your electricity bill from consumption (kWh) and the tariff.
Water Bill
Estimate your water bill from consumption and the tariff.
About this category
Home and construction calculators estimate material quantities before you buy. They are useful for planning concrete, tiles, paint, bricks, plaster and other common jobs.
Frequently asked questions
How accurate are the material calculations?
The tools use standard industry formulas (e.g. m³ of concrete = length × width × depth, with a waste factor). Results are estimates — site conditions and the brand of material can affect real quantities.
Do they include material prices?
Some tools let you enter a unit price to get an indicative cost estimate. Prices vary by region and supplier — use values from your local market.
How does the tile calculator work?
Enter the area of the wall or floor (m²) and the tile size. The tool calculates the number of tiles plus grout and adds 10% waste, the industry standard.