Do you want to estimate the amount of paint for your room and walls? Well, here is the solution. In this article, we are going to give you the best tips, paint calculator, that will help you with the amount of paint needed for your project. 

The easiest way to decorate your room and give it an entirely new look is to paint your room. But the prediction about how much paint you need seems to be really tough. You might have thought that you can never know the actual magnitude of paint needed. Well, calculating the amount of paint is not very technical, you can estimate it with very simple mathematical calculations.

This article will give you a complete guide and assist you in finding out the quantity of paint required to paint a wall or a ceiling.

Paint calculator

Credit: Pinterest

Initial Steps in Painting

Painting your unfinished room can be an amazing idea to give it a contemporary look. However, before starting painting, some initial steps that might aid you during your painting project.

  • First of all, you have to plan the area you want to paint. 
  • After that, you have to select the color of your choice. 
  • Then bring all the necessary tools required to paint the area. 
  • Then comes the most important step that is to determine how much paint you’ll need. 
  • Later, you have to prepare your walls, rooms, and ceilings.

Just keep in mind that buying all the material at once and estimating the amount of paint for every area you want to paint can be budget friendly


Paint Calculator

Credit: Pinterest


How Much Does A Gallon of Paint Cover?

If you have made all the arrangements and have finally selected the color, you might wonder how much paint to buy. The estimation of paint can vary from one part of your house to another. However, it is approximated that a gallon of paint is enough to cover 400 square feet of wall. 

Moreover, one gallon of Trim Paint will cover 375 to 425 square feet. At the same time, one gallon of Ceiling Paint will cover probably 350 to 400 square feet. And one gallon of Primer will be required to cover 225 to 275 square feet.

These estimations can vary depending upon the condition of the wall’s surface you are going to paint. If the surface is dry enough, it can double the number of coats needed. Furthermore, it is suggested to use primer because it seals the surface and prevents soaking much paint.



Paint Calculation For Walls

In order to calculate the amount of paint required to paint a wall, you first have to calculate the length of each wall through measuring tape. And then add them all, you will get a number. Multiply that number with the height of the room, i.e. from floor to ceiling. After doing all these calculations, the number you’ll get is the square feet of your room. 

In the end, you have to divide the square feet of your room with the approximation that one gallon will cover 350 square feet. Besides calculating the required demand for paint, you also have to determine the extra coat needed to paint the dark, rough, and heavily patched wall.


Ceiling Paint Calculator

As you have already measured the length of the room. Now, it would become easy for you to calculate the paint required for ceilings. To calculate the paint for ceilings, you simply have to multiply the length of the ceiling by its width (horizontally).

Then divide this number with an estimation of one gallon covering 350 square feet. After that, you will get the number of gallons required to paint the ceiling.


Paint Calculator For Doors

Paint Mood Board

Sherwin WIlliams

It quite looks odd that you have painted the room and have left the door. The old, rough doors can portray a negative image of the overall look of your house. To calculate the amount of paint for doors, you should measure the length of the doors, and their approximate length is 20 sq. ft. 

You simply have to divide the door surface that you are going to paint with 350 square feet. It would be best to keep in mind that wooden doors soak more paint and add the additional amount into the total gallons of paint required. Moreover, you can deduct the glass surfaces on the doors that don’t require painting.



Online Paint Calculators

It may be time-consuming to measure and estimate the length and width of the ceiling or walls of rooms manually. There is always a risk of wrong measurements. So, you can estimate the paint required through online paint calculator. Here is the list of some online paint calculators.


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Final Verdict 

The calculations of paint requirements are so simple, and they can aid you to buy the exact amount of paint that can fulfil your requirement. It can also save time and cost and prevent you from purchasing an extra amount of paint. Moreover, it also assists in buying paint in bulk which can ultimately reduce your cost. Because sometimes buying something in bulk is less expensive than purchasing it in a small package.

However, if you are still unclear and have difficulty in calculating how much paint you need. You can avail yourself of the opportunity to calculate these values virtually through online paint calculator. By just putting measurements of your room, ceiling, and door, you will come to know the exact gallons of paint needed.

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Jeff Kennedy

Editor in Chief

of Vade Mecum of Luxury Journal, multiple site contributor, writer, renovation professional He has been an active participant in the construction industry for 32 years, doing everything from design to finish work.
He shares his unique perspective on renovation and construction through writing about professional experiences. Jeff’s motto is that “enjoying what you do is the best feeling.” If you enjoy your job with friends, then you will never have to go to work!

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