Free Home and Garden Calculators

Practical planning guides

Work from measurements to a checked purchase list. These guides explain decisions and model limits that a single result cannot settle.

• Plan wallpaper by drops, repeats and real roll lengths

  Turn wall measurements into a cutting worksheet, check pattern alignment and understand when a roll estimate needs separate wall groups.

• From room perimeter to a baseboard cut list

  Separate net baseboard length, purchase allowance and continuous runs before choosing stock lengths.

• Count fence pickets by clear spans and gate openings

  Compare equal and fixed end gaps, combine package quantities and separate factory gates from picket spans.

• Check deck rows, reusable offcuts and saw kerf

  Understand the deck planner’s rectangular-area model and check stock cuts before treating an offcut as a saving.

• Plan Concrete Slab Bags Before You Order

  Measure a small slab, check the calculator’s bag-yield assumptions, and turn the volume estimate into a practical purchase plan with fewer surprises.

• Plan Drywall Sheets and Packs from Wall Measurements

  Estimate drywall sheets from net wall area, sheet dimensions, a cutting allowance, and pack quantity, then check the layout and buying assumptions.

• Plan Flooring Coverage Before You Order Cartons

  Measure the room, set a project-specific cutting allowance, and turn the flooring label’s coverage into a whole-carton order you can check before delivery.

• Plan Gravel Tonnage from Depth, Density, and Delivery Steps

  Convert a measured gravel area into a supplier-ready tonnage estimate, with density checks, a complete default example, and delivery rounding explained.

• Estimate Insulation Batts by Wall Bays

  Work through wall length, stud spacing, batt length, cut allowance, and pack size to create a transparent batt order estimate, not a fit decision.

• Measure Mulch Depth and Turn Bed Volume into Bags

  Measure planting beds, choose an added mulch depth, and convert cubic feet into bags with a worked example and checks for existing mulch and bag sizes.

• Plan Wall Paint by Coats, Coverage, and Can Size

  Measure wall area, subtract openings, and plan paint cans by coat count and label coverage, with a worked example and practical checks before buying.

• Plan Paver Patio Packs from the Layout

  Estimate patio paver packs from measured dimensions, actual unit sizes, joint spacing, and cut allowance, then check the result against the package label.