The toolkit
Eight calculators, one method: show the arithmetic.
Every tool converts your measurements into a planning quantity and then tells you what it cannot know — product coverage, site conditions, delivery minimums, labor rates, and local code.
Cost and material estimators
8 calculatorsPaint Calculator
Estimate gallons for walls and ceilings.
Open calculator →▤ Floors · estimated totalFlooring Cost Calculator
Plan material, waste, and installation cost.
Open calculator →▰ Masonry · cubic yardsConcrete Slab Calculator
Convert slab dimensions into cubic yards.
Open calculator →▦ Walls & ceilings · 4×8 sheetsDrywall Calculator
Estimate sheets, screws, and joint compound.
Open calculator →⌂ Roofing · bundlesRoofing Shingle Calculator
Estimate roof area, squares, and bundles.
Open calculator →╫ Outdoor projects · estimated totalFence Cost Calculator
Estimate panels, shared posts, and material cost.
Open calculator →═ Outdoor projects · deck boardsDeck Board Calculator
Estimate board count and linear footage.
Open calculator →◇ Remodeling · planning budgetKitchen Remodel Cost Calculator
Build a line-item planning budget.
Open calculator →How to use them
MethodA calculator is a measurement tool, not a quote. Enter the dimensions you actually measured rather than a house-size rule of thumb, keep US and metric inputs consistent, and read the worked example before you trust a number. Each calculator page lists the formula, a realistic example, the mistakes that most often move the result, and the references behind the convention it uses.
The result is a planning figure. The product data sheet controls coverage and installation; the contractor controls labor and site conditions; your local building department controls permits and code. Where those disagree with the calculator, they win.
Need to compare real cartons, labor, and tax side by side? Use the flooring purchase planner or the multi-room advanced planner. For the reasoning behind a number, read the field guides.