All calculators

Tile Calculator Work out how many tiles and boxes you need for a floor or wall, with a waste allowance and a rough cost. Flooring Calculator Find how many boxes of laminate, vinyl plank or hardwood you need for a room, with a waste allowance and rough cost.

Paint Calculator Estimate how many gallons of paint a room needs, with doors and windows subtracted and the number of coats included. Drywall Calculator Count drywall sheets, screws, joint compound and tape for a room, with waste and a rough cost. Wallpaper Calculator Estimate how many rolls of wallpaper a room needs, with doors and windows removed and pattern-repeat waste included. Baseboard & Trim Calculator Find the linear feet and number of baseboard pieces for a room, with doorways removed and waste for cuts.

Roofing Calculator Estimate roofing squares, shingle bundles and underlayment from your roof footprint and pitch, with waste and rough cost. Mulch & Soil Calculator Find cubic yards and how many bags of mulch, topsoil or gravel you need for a bed, with a rough cost. Fence Calculator Count posts, rails, pickets and bags of concrete for a wood fence from its length and post spacing. Deck Calculator Estimate decking boards, joists and screws for a deck from its size and board spacing. Paver Patio Calculator Count pavers plus the gravel base and bedding sand for a patio or walkway, with waste and a rough cost.

Concrete Calculator Work out cubic yards of concrete and how many 60 or 80 lb bags you need for a slab, with a waste allowance and rough cost.

AC BTU Calculator Size a room air conditioner in BTU from the room size, sun exposure and occupants — and see the unit size to buy. Insulation Calculator Find how many bags or bundles of insulation you need for an area at a given R-value, with a rough cost. Solar Panel Calculator Estimate the solar system size and number of panels to cover your electricity use, from your monthly kWh.