Material quantity blog
Long-form articles on the four material questions homeowners ask most: how much gravel, mulch, paint and roofing to buy. Each post shows the formula, a worked example in US units, coverage tables and the practical details suppliers assume you already know — then hands you the calculator.
Gravel & aggregate
How Much Gravel Do I Need for a Driveway?
Depth, stone size and compaction decide how much gravel a driveway swallows. Here is the arithmetic suppliers use, in cubic yards and tons.
Open the Gravel CalculatorMulch & landscaping
How Much Mulch Do I Need for Your Garden Beds?
Bags or bulk? Two inches or four? The math behind mulch quantity, plus the depth rules that keep plants healthy instead of smothered.
Open the Mulch & Topsoil CalculatorPaint & interior finishes
How Much Paint Do I Need to Paint a Room?
One gallon covers about 350 square feet per coat. Everything else is measuring walls properly and being honest about how many coats you need.
Open the Paint CalculatorRoofing & exteriors
How Many Shingles Do I Need for a Roof?
Roofers count in squares, not square feet. Here is how footprint, pitch multiplier and waste turn into the number of bundles on your driveway.
Open the Roofing CalculatorGravel & aggregate
How Much Gravel Do You Need for a Walkway?
A walkway is not a driveway — less depth, finer stone, and edging matter more. Here is how to size it in cubic yards and tons.
Open the Gravel CalculatorGravel & aggregate
How Much Gravel Do You Need Under a Patio?
A paver patio is only as good as its base. Here is how deep the crushed-stone layer should be and how to calculate the order.
Open the Gravel CalculatorGravel & aggregate
Landscaping Gravel: How Much Ground Does a Yard Cover?
One cubic yard of decorative gravel covers about 100 square feet at 3 inches deep. Here is the full coverage table and how to pick a stone.
Open the Gravel CalculatorMulch & landscaping
How Deep Should You Mulch? Depth Rules for Every Bed
Too little mulch does nothing; too much suffocates roots. The right depth is 2-4 inches depending on the bed — here is the breakdown.
Open the Mulch & Topsoil CalculatorPaint & interior finishes
How Much Does a Gallon of Paint Cover?
Labels say 400 square feet per gallon; textured walls and color changes say otherwise. Here is how to plan paint quantity that doesn't run short.
Open the Paint CalculatorRoofing & exteriors
Roofing Squares Explained: How Many Bundles of Shingles?
Roofers price in 'squares' — 100 square feet each. Here is how to turn your roof's footprint into squares, bundles and underlayment rolls.
Open the Roofing CalculatorConcrete & foundations
How Much Concrete Do I Need for a Slab?
Slab volume is simple arithmetic until you add thickened edges, subgrade dips and the ready-mix minimum. Here is how contractors order concrete.
Open the Concrete CalculatorFlooring & interiors
How to Measure Square Footage for Flooring
Flooring is sold by the box, not the square foot you measured. Here is how to turn room dimensions into a defensible order quantity.
Open the Flooring CalculatorMulch & landscaping
Mulch Bags vs Bulk Yards: How Many Do You Need?
Thirteen and a half 2-cubic-foot bags equal one bulk yard. Past about three yards, delivery almost always wins on both price and back strain.
Open the Mulch & Topsoil CalculatorPaint & interior finishes
How Much Exterior Paint Do I Need for a House?
Siding texture, not house size, drives paint consumption. Rough cedar can drink a third more than smooth fiber cement over the same wall.
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Roof Replacement Cost Per Square, Explained
Contractors price roofs per square — 100 square feet. Knowing what belongs inside that number is how you compare three quotes honestly.
Open the Roofing CalculatorProperty & ownership costs
How to Estimate Property Tax on a House in the US
Property tax is assessed value times an assessment ratio times the local rate, minus exemptions. Here is how each piece is set in US counties.
Open the Property Tax CalculatorHome buying costs
How Much Are Closing Costs When Buying a House?
Two to five percent of the loan is the usual range, but the mix of lender fees, title charges, prepaids and transfer taxes varies enormously by state.
Open the Closing Cost Calculator
