Free home improvement calculatorsMeasure once.
Buy once.
Turn your measurements into an exact shopping list: bags of concrete, gallons of paint, boxes of tile, stair layouts and more. Waste included, feet or metric.
Popular calculators
Concrete Slab
Enter slab size and thickness to get cubic yards, exact 40, 60 or 80 lb bag counts and ready-mix cost, with waste included.
What Climate Zone Am I In?
Find your IECC climate zone by ZIP code, city or county, and the insulation R-values the energy code requires for your attic, walls, floors and basement.
Stair Stringer
Enter the total rise to get riser height, step count, stringer length and a to-scale layout diagram with IRC code checks.
Paint
Find how much paint you need for a room in gallons and quarts, for walls and ceiling, with doors, windows, coats and wall texture included.
Mulch
Enter bed size and depth to see how much mulch you need in cubic yards and how many 2 or 3 cu ft bags to buy, for square or round beds.
Tile
Find how many tiles and boxes you need for a floor, wall or backsplash, with waste for the pattern, plus grout and thinset quantities.
Post Hole & Footing Concrete
How many bags of concrete per post?
Concrete Steps
Enter the number of steps, rise, tread depth, width and landing to get cubic yards and bags of concrete, with code checks.
Deck Board
Find how many deck boards, screws or hidden clips you need for your deck size, by board length, width and gap, with waste included.
Board Foot
Thickness × width × length for one board or a whole order, with total board feet and price per board foot.
Gravel
Find how much gravel, crushed stone, pea gravel or river rock you need in tons, cubic yards and bags for driveways, paths and patios.
Topsoil
Find how much topsoil, garden soil or compost you need for lawns, beds and leveling, in cubic yards, tons and bags, at any depth.
Cubic Yard
Convert length, width and depth to cubic yards for dirt, gravel, mulch, sand or fill.
Sand
How much sand do you need?
Paver Patio
Get how many pavers you need plus compacted base gravel, bedding sand, polymeric sand and edging for a patio, walkway or driveway.
Fence Materials
Enter fence length and height to get posts, rails, pickets, concrete bags and gravel for a wood privacy or picket fence, gates included.
Roofing Shingle
Estimate roof area from your house footprint and pitch, then get squares, shingle bundles, nails, underlayment, drip edge and cost.
Drywall
Find how many 4x8, 4x10 or 4x12 sheets you need for walls and ceilings, plus joint compound, tape and screws for the job.
Flooring
Add up to four rooms to get the boxes of laminate, vinyl plank or hardwood flooring to buy, plus underlayment, baseboard and total cost.
Shower Tile
Get wall and floor tile, grout, thinset, backer board and waterproofing for a tub surround or walk-in shower, with waste included.
Insulation
Get batt bags for walls, floors and attics, or bags of blown-in fiberglass or cellulose to reach your target R-value, by attic size.
Frost Dates by ZIP Code
Find your average last spring and first fall frost date by ZIP code, with safer planting dates and spring and fall vegetable calendars from NOAA 1991–2020 data.
What Planting Zone Am I In?
What planting zone am I in?
Retaining Wall Block
Enter wall length and height to get blocks, caps, base gravel, drainage stone and drain pipe for popular block brands, with cost.
Sod
Enter your lawn area to get the square feet of sod to order, slabs or rolls, pallets, total cost and how much water the first soaking takes.
Grass Seed
Pick your grass type and lawn size to get pounds of seed for a new lawn or overseeding, from university extension seeding rates.
Concrete Block
Get 8x8x16 CMU or cinder block counts for a wall, bags of mortar and grout for filled cells, with doors and windows subtracted.
Gutter
Enter your eave lengths to get 10 ft gutter sections, downspouts, hangers, end caps and elbows, plus the right slope for each gutter run.
Rafter Length & Roof Pitch
Get common rafter length from building width and roof pitch, with overhang, roof angle, plumb and seat cuts and a to-scale drawing.
Deck Framing Planner
Joist and beam size, post spacing, post and footing size and ledger fasteners, with a to-scale framing plan.
Siding
Get squares, vinyl siding cartons or fiber cement planks for your house, plus starter strip, J-channel, corner posts and nails.
Wallpaper
Enter wall width, height and pattern repeat to see how many rolls of wallpaper you need and strips per roll, for US and European rolls.
Baseboard & Trim
Get linear feet of baseboard, door and window casing and crown molding, and how many 8, 12 or 16 ft pieces to buy, with waste included.
Square Footage
Square footage calculator for rooms, L-shapes, yards and circles in feet and inches.
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Enter your measurements
Feet and inches or metric. Every field explains how to measure it.
Get a shopping list
Real product sizes (40/60/80 lb bags, boxes, bundles) with waste built in.
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