How to calculate the performance of a paint

Start by measuring the width of the four walls of the room, add these quantities and multiply the result by the height. This way you will get the square meters of surface that you are going to paint. For example, if two of the walls measure 4 meters and the remaining two measure 3.50 meters, they add up to 15 meters, which when multiplied by 2.50 meters in height results in 37.5 square meters of surface.

Calculating the Amount of Paint

To calculate the liters of paint you will need you must know the performance of the paint you will use, but you can find that information on the product packaging. If you have no idea about this, visit our painting section and check the technical characteristics of our products.

Assuming that you will use a painting whose yield is 12m2 / l, multiply the surface that we previously calculated (37.5 m2) by the number of hands that you will give to the walls of the room (2). Then divide that amount by the paint yield (12m2 / l) to get the number of liters of product you need to get the job done.

Surface (37.50) x Number of coats (2) / Yield (12m2 / l) = 6.25 liters

You need 6.25 liters of paint in this case.

So you can calculate the amount of paint required to cover all the walls in the room. Now, if among your plans is also painting the ceiling, you will have to do the same operation: multiply the width by the length of the room. It's simple: in the previous example it would be 4m x 3.50m, which would result in a surface area of 14 m2. Multiplying this result by the 2 coats of paint and dividing by the yield would give a result of 2.33 liters of product, assuming you are going to use the same paint.

There are those who recommend subtracting the surface of the doors and windows to obtain a more exact amount, but the truth is that it is always better than over a little paint for any eventuality.

The result we have calculated is approximate, because there are a variety of factors that influence the actual amount of paint that you will eventually use. However, it does give you pretty reliable guidance on how much you need.

Consider the state and type of surface to be painted. It is important to note that for plaster walls, rough walls or those that have not been painted, you will have to apply one more hand so that no details remain, since they absorb more paint than a smooth surface. In contrast, surfaces that have been painted recently or not long ago will require less paint.

If you are going to change the color of the room to a darker color, you will probably also need to apply one or two more coats of product.

If you are already excited to start, visit our painting section where you can also find all the accessories that will make it easier to paint your house like a true professional: spatulas, rollers, brushes and brushes, paint trays, professional painter's buckets , plastic grating for trays, putty paste or powder to smooth surfaces or repair fissures or cracks, all this together with other accessories that will undoubtedly guarantee you obtain a quality finish.

Now, let's get to work!