How much do you need?

Free calculators for mulch, concrete, paint, flooring and other home projects. Enter your measurements and get a shopping list.

Yard & garden

Mulch, gravel, soil, sod, lawn care, pavers, walls and pools.

  • Mulch calculatorFind how many cubic yards or bags of mulch you need for a garden bed. Enter length, width and depth for an instant answer.
  • Gravel calculatorCalculate how many cubic yards and tons of gravel, crushed stone or rock you need for a path, patio or driveway.
  • Raised bed soil calculatorWork out how much soil fills your raised garden beds, in bags or cubic yards, with an allowance for settling.
  • Sod calculatorCalculate how much sod you need for a new lawn: square feet, pallets and individual slabs or rolls.
  • Paver calculatorEstimate the number of pavers, base gravel and bedding sand for a patio or walkway.
  • Pool volume calculatorCalculate pool volume in gallons for rectangular, round and oval pools, plus how long it takes to fill.
  • Cubic yard calculatorConvert length, width and depth into cubic yards for soil, mulch, gravel, sand or concrete. Includes cubic feet and cubic meters.
  • Grass seed calculatorFind how many pounds of grass seed you need for a new lawn or overseeding, by grass type and lawn size.
  • Lawn fertilizer calculatorCalculate how much fertilizer to spread for your lawn based on the nitrogen percentage on the bag and your lawn size.
  • Retaining wall block calculatorEstimate retaining wall blocks, cap blocks, base gravel and drainage gravel from wall length, height and block size.

Concrete & masonry

Slabs, footings, steps, rebar and brick.

  • Concrete slab calculatorCalculate how much concrete you need for a slab, patio or walkway, in cubic yards or 40, 60 and 80 lb bags.
  • Fence post concrete calculatorFind how many bags of concrete you need to set fence or deck posts, based on hole size, depth and post size.
  • Concrete column and tube calculatorCalculate concrete for round columns, piers and form tubes, in cubic yards and 40, 60 or 80 lb bags.
  • Concrete steps calculatorCalculate the concrete needed for poured steps from the number of steps, rise, run, width and landing size.
  • Rebar calculatorCalculate how many rebar bars and linear feet you need for a concrete slab grid, based on spacing and edge clearance.
  • Brick calculatorCalculate how many bricks you need for a wall based on its size, openings and brick type, including mortar joints.

Inside the house

Paint, drywall, flooring, carpet, tile, wallpaper and trim.

  • Square footage calculatorCalculate square footage for a rectangle, circle or triangle, with square yards, square meters and optional cost.
  • Paint calculatorEstimate how many gallons of paint you need for a room, accounting for doors, windows, coats and the ceiling.
  • Drywall calculatorCalculate how many sheets of drywall you need for a room’s walls and ceiling, in 4×8, 4×10 or 4×12 sheets.
  • Flooring calculatorWork out how much flooring to buy, including waste, in square feet and boxes. Works for laminate, vinyl plank and hardwood.
  • Tile calculatorCalculate how many tiles and boxes you need for a floor or wall, including grout joints and waste.
  • Carpet calculatorCalculate how many square yards of carpet and pad you need for a room, with waste and an optional cost estimate.
  • Wallpaper calculatorCalculate how many rolls of wallpaper you need for a room, allowing for doors, windows and pattern matching.
  • Baseboard and trim calculatorCalculate the linear feet of baseboard or crown molding for a room, and how many 8, 12 or 16 foot pieces to buy.

Building & carpentry

Roofs, siding, framing, decks, fences, stairs and lumber.

  • Roofing calculatorEstimate roof area, roofing squares and shingle bundles from your home’s footprint and roof pitch.
  • Deck board calculatorCalculate how many deck boards and screws you need for a deck, based on deck size, board width, gap and board length.
  • Fence calculatorCalculate fence posts, rails and pickets for a wood fence from its length, post spacing and picket width.
  • Stair calculatorCalculate the number of steps, riser height, tread run and stringer length for deck or interior stairs.
  • Board foot calculatorCalculate board feet and lumber cost from thickness, width, length and quantity.
  • Roof pitch calculatorConvert roof rise and run into pitch, angle in degrees, slope percentage and rafter length.
  • Siding calculatorEstimate squares of siding for a house from wall length, height and gable ends, minus windows and doors.
  • Wall stud calculatorCalculate studs and plates for a framed wall based on length, stud spacing, corners and openings.

Energy & cooling

Insulation, solar, AC sizing and running costs.

  • Air conditioner BTU calculatorFind the right air conditioner size in BTU for a room, using the Energy Star sizing chart with adjustments for sun, people and kitchens.
  • Electricity cost calculatorCalculate the cost to run any appliance per day, month and year from its wattage, hours of use and your electricity rate.
  • Attic insulation calculatorCalculate how many inches of insulation to add to your attic to reach a target R-value, for blown-in or batt insulation.
  • Solar panel calculatorEstimate the solar system size and number of panels needed to cover your electricity use, from your bill and local sun hours.