Project Buy ListPlan better. Build smarter.

Home Improvement Calculators & Material Planning Tools

Measure once. Buy with confidence.

Plan home improvement materials, waste, package quantities, and cost with calculators that show their assumptions.

Free to useUS and metricTransparent formulas

Start with the room in front of you

Browse all 7 tools
PaintingPaint CalculatorEstimate wall paint, coats, waste, and the whole gallons or liters to buy.Open calculator FlooringFlooring CalculatorTurn room area and product coverage into full boxes and an estimated material cost.Open calculator FlooringTile CalculatorCalculate individual tiles, full boxes, waste allowance, and purchase cost.Open calculator WallsDrywall CalculatorEstimate sheets for walls, ceilings, and openings with waste and full-sheet pricing.Open calculator

A clearer way into the catalog

Browse by project

Each project area groups tools that share measurements, materials, and the next decisions you will make.

PaintingPlan wall and ceiling coverage, coats, waste, purchase quantities, and paint cost.tools02FlooringEstimate floor area, tile counts, packaging, waste, and material cost.tools02WallsPlan drywall, wallpaper, insulation, openings, and finish materials for interior walls.tools02TrimEstimate linear runs, full pieces, cut waste, and cost for interior finish trim.tool01

From rough measurements to a store-ready number.

A useful estimate does more than multiply dimensions. It makes the assumptions between a room and a purchase visible.

01
Measure the project

Enter the dimensions and openings that affect the material area.

02
Adjust the assumptions

Match coverage, waste, package size, and price to the product you plan to use.

03
Plan the purchase

See the calculated need, the rounded quantity to buy, and the estimated material cost.

Keep the project moving

More calculators

Finish the surrounding surfaces and trim with the same measurement-first approach.

WallsWallpaper CalculatorPlan strips and rolls while accounting for openings, pattern repeat, and waste.PaintingCeiling Paint CalculatorEstimate ceiling coverage, coats, overhead waste, and whole-container cost.TrimBaseboard CalculatorConvert room perimeter into linear length, full trim pieces, waste, and cost.

An estimate is more useful when you can see how it was made.

01
Transparent formulas

Every calculator explains the geometry, deductions, waste, and rounding behind the result.

02
Practical purchase quantities

Results distinguish calculated material need from the full boxes, sheets, rolls, or containers you may need to buy.

03
Tested calculations

Reference examples, conversion behavior, validation, and package boundaries are covered by automated contract tests.

04
Clear limits

Each tool states what its estimate includes so you know when local product details or professional advice still matter.