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Total Wall Area (m) = Width (m) × Height (m)

Door Area Calculation

Single Door Area (m2) = Number of Single Doors × 1.9 (m) × 0.8 (m)

Double Door Area (m2) = Number of Double Doors × 1.9 m (×) 1.6 (m)

Paintable Wall Area Equation

Paintable Wall Area (m2) = Total Wall Area (m2) − Total Door Area (m2)

Total Paint Area Equation

Total Paint Area = Paintable Wall Area × Number of Coats

Total Paint Needed Equation

Total Paint Needed (liters) = (Total Paint Area Coverage per 5 liters) × 5

What is a

Paint Calculator

A paint calculator is a tool designed to estimate the amount of paint required to cover a specific area, typically walls or other surfaces, based on the dimensions of the area and additional factors such as the number of doors, windows, and coats of paint. 

This helps users determine how much paint they need to purchase for a painting project, reducing waste and ensuring sufficient coverage.

How to use the 

Paint Calculator

Enter Wall Dimensions

Width: Input the width of the wall in meters in the designated field.

Height: Input the height of the wall in meters in the designated field. .

Enter Door Details

Single Doors: Input the number of single doors to exclude from the paint area.

Double Doors: Input the number of double doors to exclude from the paint area

Enter Paint Coverag

Enter the amount of area your paint is able to cover in m2 per 5 litres. This is usually how the coverage is displayed on the paint bucket.

Select Number of Coats

Choose the number of coats of paint you plan to apply by selecting the appropriate radio button (1, 2, or 3 coats).


Click the "Calculate" button to compute the total paint area.

Benefits of Using a Paint Calculator

  1. Accuracy:Provides a precise estimate of paint required, helping to avoid over-purchasing or under-purchasing.

  2. Cost-Effective:Helps in budgeting by giving a clear idea of the quantity of paint needed, which in turn helps in cost estimation.

  3. Convenience:Saves time and effort in manual calculations.
    Easy to use with straightforward inputs and immediate results.

  4. Waste Reduction:Reduces paint wastage by ensuring you buy only what is necessary for your project.

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