🏗️ 20 Construction & DIY Calculators
Estimate materials and costs for any building project. From concrete and lumber to paint and flooring — get accurate quantities before you buy.
Building & Material Calculators
Calculate exact material quantities for construction and home improvement projects. Avoid overbuying or running short mid-project.
Concrete Calculator
Calculate how much concrete you need in cubic yards or bags. Enter slab dimensions for an instant material estimate....
Brick Calculator
Calculate the number of bricks needed for a wall or project. Enter dimensions and get an instant estimate with mortar jo...
Paint Calculator
Free paint calculator: how many gallons of paint for a 12x12 room (2 gallons, two coats) plus a gallons-per-room table f...
Flooring Calculator
Calculate flooring materials needed for any room. Works for hardwood; laminate; tile; vinyl; and carpet with waste facto...
Roofing Calculator
Calculate roofing materials needed. Enter roof dimensions to get squares; bundles of shingles; underlayment; and ridge c...
Drywall Calculator
Calculate drywall sheets needed for your project. Accounts for doors; windows; and waste for accurate material estimates...
Gravel Calculator
Calculate gravel needed in tons or cubic yards. Enter area and depth for driveways; paths; landscaping; or drainage proj...
Mulch Calculator
Calculate mulch needed in cubic yards or bags. Enter bed dimensions and desired depth for landscape and garden projects....
Fence Calculator
Calculate fence materials needed. Enter length and style to get posts; rails; pickets; concrete; and hardware estimates....
Deck Cost Calculator
Average cost of a 12x16 deck in 2026: $4,800–$8,600 pressure-treated, $7,700–$13,400 composite. Free calculator with fra...
Tile Calculator
Calculate how many tiles you need for floors or walls. Enter area and tile size for accurate count with waste factor....
Lumber Calculator
Calculate board feet of lumber for construction or woodworking. Convert between board feet; linear feet; and total cost....
Insulation Calculator
Calculate insulation needed for walls; attics; or floors. Get batt count; roll coverage; and R-value recommendations....
Staircase Calculator
Calculate staircase dimensions including number of steps; rise; run; and stringer length. Meets building code requiremen...
Wallpaper Calculator
Calculate wallpaper rolls needed for a room. Accounts for pattern repeat; doors; and windows for accurate ordering....
Paver Calculator
Calculate the number of pavers needed for a patio or walkway. Enter area and paver size for accurate count with waste....
Soil Calculator
Calculate cubic yards of topsoil or fill dirt needed. Enter bed dimensions and depth for gardens; lawns; or grading....
Rebar Calculator
Calculate rebar quantity for concrete slabs; footings; and walls. Get total linear feet and number of bars needed....
Plywood Calculator
Free 4x8 sheet of plywood calculator: divide area by 32 sq ft, add 10-15% waste. A 12x16 floor needs 7 sheets. 2026 CDX,...
Gutter Calculator
Calculate gutter length and downspout count for your home. Enter roofline measurements for a complete materials list....
Why Calculate Materials Before Buying
Accurate material estimates save money by preventing over-ordering and avoid project delays from running short. Most construction materials have a 5-10% waste factor built in — our calculators account for this so you buy the right amount the first time.