Apply for financingDrywall calculator
This drywall calculator counts sheets for the walls of a rectangular room. Choose 4×8 or 4×12, subtract openings, and add waste. Joint compound and tape are not estimated.
Sheets to order
15sheets
Planning estimate from the numbers you enter. Coverage, density, waste and price are assumptions, not a supplier quote or an engineering specification.
How it works
Wall area uses the same perimeter formula as the paint calculator: 2 × (length + width) × height, minus openings. A 4×8 sheet is 32 square feet. A 4×12 sheet is 48. Divide the net area by the sheet, multiply by 1 plus waste, and round up because you cannot buy a fraction of a sheet. The default waste is 10% for cuts around doors, windows, and outlets. Ceilings are not included. Add ceiling area, length times width, if you are boarding the lid.
Formula
The result shows the rounded order and the unrounded count so you can see how close you are to the next sheet. There is no price field. Sheet prices move by thickness and type.
Example
The walls are 432 square feet. With 10% waste that is 14.85 sheets, which rounds up to 15 sheets of 4×8. Subtract real doors and windows or you will overstate the board.
Tips
Horizontal or vertical hanging changes waste more than the raw area. Thickness, mold resistance, and type X are purchasing choices, not area choices. Corners still need bead, and joints still need compound. Those are not sheets.
Equipment
Drywall lifts and other job equipment can be financed through Dengaro when the request is business equipment from $15,000 to $2 million. The sheet count is not sent as the amount.
Important questions
No. Add length times width to the wall area yourself, or run the ceiling as a separate note. The form is the four walls.
Put their square feet in the openings field. The net area drops by that amount before the sheet count. A rough door opening is often about 20 square feet, but measure the opening you will not cover.
Each sheet is 48 square feet instead of 32, so the same wall needs fewer pieces. You still round up, and the sheets are harder to handle.
It is intentionally left out. Coverage depends on the finish level and whether you are coating the whole wall. Order compound from the bucket coverage, not from this sheet count.
Financing built into the sale