Plan the project before you buy the materials.
Quick estimates for roofing, flooring, paint and concrete. Each tool is free, mobile friendly and designed to help you turn measurements into a practical shopping quantity.
Roofing CalculatorEstimate roof area, pitch adjustment, waste, roofing squares and bundles.Flooring CalculatorEstimate square footage, waste, boxes and optional material cost.Paint CalculatorEstimate wall area and gallons based on room size, coats and coverage.Concrete CalculatorEstimate cubic yards for slabs with a waste allowance.
Why use a project calculator before buying?
Material orders usually need more than the raw room or slab dimensions. Waste, cuts, overlaps, pitch and package sizes can change what you actually need to purchase. These calculators make those assumptions visible so you can adjust them instead of relying on a hidden estimate.
Use the result as a planning estimate
Real projects can include irregular layouts, openings, damaged material, local installation practices and product-specific coverage. Confirm final quantities against manufacturer specifications and field measurements before ordering.