Buy the right amount the first time
Concrete bags, mulch, gravel, pavers and paint, worked out from your measurements with the formula on every page.
Calculators
CalculatorConcrete calculatorBags or cubic yards for a slab, pad, footing or post holes.CalculatorMulch, soil and gravel calculatorCubic yards, bags or tons for any area and depth.CalculatorPaint calculatorGallons and quarts for walls and ceiling, by coat.CalculatorPaver patio calculatorPaver count plus base gravel and bedding sand.
Three rules that save a second trip
Measure twice
Measure in feet and inches, convert once, and sketch the shape. Our measuring guide covers curves and odd shapes.
Use your label
Bag yields and paint coverage vary by product. Every calculator lets you enter your own figure.
Add a margin
A 5–10% margin covers uneven ground, spills and cuts. The calculators show it separately so you can choose.
Guides
GuideBags vs ready-mixThe bag math and the questions to ask before ordering a truck.GuideCubic yards, bags and tonsConvert between cubic yards, bags and tons.GuideMeasuring irregular areasSquare feet for L-shapes, circles, curves and odd beds.GuideHow deep to mulchRecommended mulch depth and how to avoid mulch volcanoes.
New to the terms? Our glossary explains them in plain words.