Pick a project. Each calculator shows its formula, links its sources and works on your phone at the store.
Cubic yards and 40–80 lb bag counts for slabs, footings and post holes.
Gallons and quarts for a room, minus doors and windows, with the ceiling optional.
Sheets for walls and ceiling, plus joint compound and tape, from your room size.
Boxes or tiles to buy, with waste for straight, diagonal and herringbone layouts.
Deck boards, joists and screws for a straight or diagonal deck, from its size.
Posts, rails, pickets and concrete for a wood fence, including gates and corners.
Pavers, gravel base, bedding sand and edging for a patio or walkway.
Cubic yards, bags and tons of mulch, pea gravel, crushed stone or river rock.
Roof area, squares and shingle bundles from house size and pitch, with starter, ridge cap, underlayment and drip edge.
R-value to add for your climate zone (ENERGY STAR), then bags of blown-in or packages of batts from your product’s label.
Area of any room or yard: rectangles, L-shapes, triangles, circles and cut-outs.
