Construction and Renovation
Flooring, paint, brick, concrete, tiles, mortar and skirting from the real area, with cut waste included.
Material bought short stops the job halfway; bought long becomes unused stock. These calculators start from the room's real measurements and apply the cut waste you enter — usually 5% to 10% for straight flooring and more for diagonal layouts. The quantities are purchase estimates: check the manufacturer's coverage figure, because yield per litre or per square metre changes between products.
How to use these calculators
- 1Measure length and width in metres and enter the expected cut waste.
- 2Add up wall areas and subtract doors and windows before calculating paint or cladding.
- 3Use the quantity as a purchasing base and confirm coverage per litre or per metre on the packaging.
Applications in this category
Each application groups related functions on one page, with a guide for each one.
Calculators in this field
1 calculatorsFrequently asked questions
How much waste should I enter?
For straight flooring, 5% to 10% usually covers cuts and skirting; for diagonal installation, 10% to 15%. The tool applies exactly the percentage you enter and assumes nothing.
Does the calculation replace the supplier quote?
No. It estimates material quantity; price, delivery and coverage per package remain with the supplier.