From room measurements to tile, paint and trim
One rectangular room, three finish quantities. Follow the deductions and package rounding before placing an order.
Measure the usable rectangle
Enter inside length and width in feet. Enter wall height separately for paint. Floor area is length × width. The tool does not subtract islands, floor openings or irregular corners; split those projects into measured rectangles and verify the combined order.
Count tile cells, not only square feet
Use actual tile dimensions in inches, plus the planned grout joint. The planner counts a centered, straight-lay grid. Opposite edge pieces are balanced; each cell consumes one tile, even when its offcut might be reusable. Tile allowance is added to the cell count, then rounded up to whole boxes. A 90° comparison changes tile orientation without changing the room.
Make paint and trim deductions separately
Wall openings are an area deduction from paint. Trim exclusions are a length deduction from the room perimeter. A door therefore needs both measurements. Paint is rounded to whole gallons using your number of coats and the manufacturer’s coverage. Trim adds the entered allowance and rounds to linear feet, not to stock lengths.
Keep the assumptions with the order
Print the project sheet, download the purchase CSV, or export a JSON plan to reopen the measurements. All prices are your inputs, not current retail quotes. Adhesive, grout material, primer, ceiling paint, labor, delivery, tax, tools and trim-stock cutting losses are outside the estimate.