For a rectangular wall, multiply the width by the height; multiple walls, exterior walls or multiple areas can be calculated separately and then added together, and then the total net area after deducting doors and windows is filled directly above.
Prioritize the coverage rate and recommended number of coats per liter or gallon indicated on the paint bucket or product technical data. The amount of existing paint can be directly back-calculated to the net area that can be completed under the current coverage, number of passes, and loss rate.
The result is a purchasing estimate. Surface roughness, construction tools, background color changes and product type will affect the actual dosage. Please refer to the specific product label and technical information.
Enter the full room dimensions or fill in the net painted area directly. Use the coverage rate and number of passes marked on the product to calculate the required paint; filling in the amount of existing paint can also back-calculate the area that can be covered and the remaining gaps.