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Home project calculators

Use this map to choose a working measurement calculator before planning materials. Every listed tool opens directly and includes formulas, assumptions, and estimate limits.

Use the Paint Calculator Use the Flooring Calculator Review estimate limits

Interior measurement

Estimate room dimensions, wall surfaces, paint coverage, wallpaper rolls, drywall panels, and basic decorating quantities.

  • Interior measurement

    Room Area Calculator

    Find floor area, perimeter, and metric equivalents from room length and width.

    Result focus: Square feet, square meters, perimeter, and material planning notes.

    • Length
    • Width
    • Unit preference
    • Optional waste factor
    Open calculator

  • Interior measurement

    Wall Area Calculator

    Estimate gross and net wall area after subtracting doors, windows, and custom openings.

    Result focus: Gross wall area, opening area, net wall area, and formula details.

    • Room length
    • Room width
    • Wall height
    • Doors
    • Windows
    Open calculator

  • Interior measurement

    Paint Calculator

    Estimate paint gallons, coats, waste, and optional cost for a room.

    Result focus: Paintable area, total coated area, rounded gallons, and assumptions.

    • Room size
    • Wall height
    • Coats
    • Coverage
    • Openings
    Open calculator

Flooring and tile

Plan floor material quantities with clear waste assumptions for cuts, layout direction, and box coverage.

  • Flooring and tile

    Flooring Calculator

    Estimate floor area, added waste, boxes needed, and optional cost.

    Result focus: Base area, total area with waste, boxes needed, and cost estimate.

    • Room length
    • Room width
    • Box coverage
    • Waste factor
    Open calculator

  • Flooring and tile

    Tile Calculator

    Estimate tile counts from project area, tile size, waste, and box quantity.

    Result focus: Tile area, base count, waste-adjusted count, and box estimate.

    • Project size
    • Tile length
    • Tile width
    • Waste factor
    Open calculator

How estimates are handled

HomeMeasureKit calculators are planning tools. Results should make assumptions visible, use centralized unit conversion, and keep formula explanations close to the final estimate.

Clear planning foundation

Public calculator pages are built around working tools, visible formulas, internal links, and estimate limits so users can understand the estimate before applying it.