Home & DIY Calculators
Estimate materials, energy and project quantities before buying or requesting quotes.
← Browse all calculators7 calculators in this category
Estimate asphalt volume, weight and material cost for a rectangular area.
Open calculator → Home Flooring CalculatorEstimate flooring area, packs and cost including a waste allowance.
Open calculator → Home Paint CalculatorEstimate paint litres from wall area, coats and coverage.
Open calculator → Home Tile CalculatorEstimate tile quantity including wastage.
Open calculator → Home Wallpaper Roll CalculatorEstimate wallpaper rolls from wall and roll dimensions.
Open calculator → Home Concrete Volume CalculatorCalculate concrete volume for a rectangular slab.
Open calculator → Home Solar Panel Payback CalculatorEstimate simple payback from installation cost, annual generation and electricity value.
Open calculator →How to use these home calculators
These tools are useful for estimating materials, quantities or running costs before starting a home project. Choose the calculator that most closely matches your question, check every unit and read the explanation beneath its result.
Get a more useful estimate
Measure each area carefully and add an appropriate allowance for cuts, waste, repeat patterns or uneven surfaces. Change one input at a time when comparing scenarios so you can see what caused the difference.