Paint Calculator – Estimate How Many Liters of Paint You’ll Need

Easily estimate the amount of paint required for paint work using this advanced paint calculator.

Paint is a type of surface coating that is applied in the form of a liquid. When it dries, it leaves a thin film (60โ€“150 ยต) on the painted surface. It is mainly applied to protect the surface from possible stresses (mechanical or chemical) and to enhance the beauty of the surface area.

Some of the common types of paint available in the market are oil paints, water paints, cement paints, bituminous paints and special paints.

Paint Calculator Use :

Steps to use this calculator are mentioned below:

  • This online wall paint calculator is quite simple to use.
  • First, decide which unit of the room you’ll be painting.
  • Then choose the unit in which you measured the room’s dimensions.
  • Enter the room’s dimensions (length, width & height).
  • Enter in the dimensions of the room’s doors and windows in the appropriate input boxes. In addition, specify the number of doors and windows in your room.
  • By providing these figures, you may estimate the total amount of paint needed for your painting project.

Things To Know Before Using This Calculator

This calculator will help you estimate how much paint you’ll need for a single coat of paint. The results may differ if your paint work demands two coats.

The displayed results are based on the paint’s standard coverage area per litre and the actual amount of paint required for your wall may slightly vary.

No calculator or tool can accurately estimate the amount of paint you’ll need for your painting project. However, you can use this paint calculator to get an average figure.

paint calculator

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How to Measure the Dimensions of the Room

The dimensions of your room are the most important thing you’ll need to estimate the amount of paint required for your walls. If you know them, that’s fine, but if you don’t, you’ll have to measure them manually. Even if you have a building plan for your house, the work will be completed.

room dimensions
room dimensions

You will need a measuring tape to measure the dimension of your room. Measure all the 3 dimensions (length, width & height) of the room only in similar measurement unit. You can consider the above image for reference, if you get confused while measuring the dimensions of your room.

How to Measure Dimensions of Door and Window

Along with the room dimensions, you’ll need to know the dimensions of the door and window for painting work. The entire area of the doors and windows is subtracted from the overall surface area of the room to determine the total amount of paint required.

If you want to paint the door and windows the same colour as the rest of the room, you won’t need to estimate their size.

dimensions of door and window
door and window dimensions

You can consider the above image as reference to measure the dimension of doors and windows of your room.

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