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wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. To create this article, 42 people, some anonymous, worked to edit and improve it over time. This article has been viewed 589,226 times. 88 votes – 60% Co-authors: 42 Updated: December 4, 2020 Views: 589,226

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To measure the floors of a room, measure the length and width of the room at the widest parts with a tape measure. Then, multiply these numbers together to find the area of the room in square feet. If there are any rectangular recesses in the room, like a closet or bathroom, repeat this process add everything together to determine the total floor area. To learn how to calculate round areas of a room, keep scrolling!

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5 tips for measuring for painting to get the job done faster

If you’re preparing to hire professional painters to paint your home, chances are that you want the job done as fast as possible. One of the things that really slows a job down is when the measurements are off, causing your painters to need more paint and spend more time finishing up. This is why accuracy is key!

Here are some tips to help you accurately measure.

1. Have a helping hand

Whether it’s your spouse, your parent, or a friend of yours, asking someone to lend a hand with collecting measurements will definitely speed up the process. Some areas of the house can either be really tricky or really large. Having someone available to help you will make the measuring process ten times easier and help you ensure your surfaces have been properly measured.

2. Double-check your measurements

This might seem a tad annoying, but it will save you money and time down the line. Measuring each surface twice will help ensure that the measurements you’ve collected are accurate. It’s also a good idea to double check your math to make sure that all the right numbers have been added up and that your total square footage for everything is correct.

3. Spreadsheets are your friend

3. Spreadsheets are your friend

As mentioned earlier in this article, spreadsheets can really help you keep track of your measurements. Not only is it easier to label everything, but programs like Microsoft Excel and Google Sheets can do all the math for you, so you’re less likely to have errors.

4. Pay attention to details

While collecting measurements, this is also an important time to make a note of any special features your surfaces have. Whether it’s a textured ceiling, paneled door, or unique ceiling, your painters need to know about it. This will help them to more accurately assess the amount of time and paint that will be required for the job.

5. Test your measuring tools before you begin

5. Test your measuring tools before you begin

We’ve shared some great options when it comes to measuring around your home. However, if you decide to go the electronic or digital route (i.e. laser pointer, phone app) make sure to test them out with easy to measure surfaces first. There’s nothing worse than measuring everything only to realize down the line that all of your numbers were wrong.

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How to measure floors for painting

When it comes to measuring your floors, the process is very similar to measuring your walls. The only difference is that you happen to be walking on this surface while doing it. Here are the steps for measuring your floor for a paint quote.

  1. Measure the length of the floor (top wall to bottom wall) using your preferred measuring tool. Record the number.
  2. Measure the width of the floor (left wall to right wall) using your preferred measuring tool. Record the number.
  3. Multiple the two numbers together to get your square footage of the floor. This is the number you’ll need to provide for your quote.
  4. Repeat these steps for any additional floors you wish to have painted.

PRO TIP: Divide the floor into sections

If you happen to be measuring the floor of a complex area, such as your basement, try dividing the floor into multiple rectangular (and potentially triangular) sections, then add all of your numbers together to get the total square footage of the floor.

Window and Door Concerns

Since all rooms have at least one door and most have windows, feel free to subtract the square footage of these elements from your wall calculations. Either measure the square footage of each window and door individually, or estimate these numbers. The typical door is 21 square feet, while the average window is 15 square feet. Subtract the total square footage of windows and doors from the wall square footage to determine the total square footage of wall space requiring paint.

The typical online paint calculator square feet measurements include estimates, not exact measurements, of window and door sizes, as well.

How to figure square footage of a wall?

It doesn’t matter whether you’re thinking how to calculate wall square footage for paint or for wallpaper – it’s the same. Use these pieces of advise to improve your ability to figure out the square feet of your wall:

Precise measurement is the key 🔑 – no matter if you’re using the wall sq ft calculator or computing everything yourself:

  • Start with drawing a plan of your room/house – it’ll make it easier to measure and store data;

  • Alway use the proper equipment – a steel tape measure or a yardstick;

  • Measure the length of your walls, including both doors and windows; and

  • Determine the height of your walls – measure them from the floor to ceiling. Exclude the length of a dropped ceiling or moulding (coving).

It’s math time! Let’s find out how to calculate the square feet of a wall.

So how do we calculate the square feet of a wall? The equation is simple:

walls square footage = total length of the walls * ceiling height

But how to calculate sq ft of a wall with doors and windows? 🤔

corrected wall square footage = wall square footage - windows area * number of windows - door area * number of doors

Now it’s time to figure out the square feet of windows and doors – take a look at the standard sizes, presented in the table below:

Windows3 x 4 ft12 ft²
Doors3 x 7 ft21 ft²

That’s how to calculate square feet of a wall. Are you still at the beginning of your journey, not yet sure about the number of planned doors and windows? Try our basic construction calculators:

Measuring tips (partial wall)

Submit your exact measurements of your desired mural space.

We create all custom size murals based on the specific dimensions you provide.

For single panel murals, we print the exact dimensions you provide plus approximately 1/16” bleed.

For larger, multi-panel murals, we add an extra inch of bleed to the height and width of the full mural to accommodate for slightly uneven wall dimensions.

Extra material can be easily trimmed away once the mural application is complete; do not trim before installation.

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