Topic

Home Improvement

Buying too little means a second trip and mismatched batches. Buying too much wastes money. These calculators turn measurements in feet and inches into the quantities you would buy, with a waste allowance you can change.

Every page states its assumptions. Always confirm quantities with your supplier and local building requirements before you buy.

Concrete and Masonry 2

Concrete CalculatorWork out how much concrete a slab, footing, wall, round column or set of steps needs, in cubic yards and in bags.

Paver CalculatorFind how many pavers a patio needs, plus the cubic yards of gravel base and bedding sand beneath them.

Flooring and Tile 3

Square Footage CalculatorMeasure any mix of rooms and shapes, subtract the parts you do not need, and get the total in square feet, yards and meters.

Flooring CalculatorTotal your rooms, add a waste allowance and see how many boxes of flooring and how much underlayment to buy.

Tile CalculatorCount the tiles and boxes for a floor, wall or backsplash, with the grout joint built into the tile spacing.

Paint and Drywall 2

Paint CalculatorEnter your walls, subtract doors and windows, and see how many gallons of paint to buy for the coats you plan.

Drywall CalculatorAdd up walls and ceilings, deduct openings and see how many sheets to buy, plus rough fastener and compound estimates.

Roofing 1

Roofing CalculatorEstimate roof area, squares and shingle bundles from the footprint, overhang and pitch of a simple gable or hip roof.

Landscaping 2

Mulch and Gravel CalculatorFind how much mulch, gravel, topsoil or sand covers your beds, in cubic yards, bags and tons.

Pool Volume CalculatorEstimate how many gallons and liters of water your pool holds from its shape, size and average depth.

Framing and Decks 3

Board Foot CalculatorList your boards, get board feet for every row and a total, and price the order at your cost per board foot.

Deck CalculatorSize up the decking boards and joists for a rectangular deck from its dimensions, board width and gap.

Fence CalculatorEnter the length of your fence, gates and picket sizes to count posts, rails, pickets and post concrete.

Utilities 2

BTU CalculatorGet a rule-of-thumb BTU per hour and tonnage for a room. It is a starting point, not a professional load calculation.

Electricity Cost CalculatorAdd your appliances and your own rate per kilowatt-hour to see what each one costs per month and per year.