How do I calculate wall area?

Add the width of every wall together, then multiply by the ceiling height. That gives the total wall area. Take off the doors and windows to get the area you actually cover.

How many square feet is one square metre?

About 10.76 square feet. So a 50 square metre wall is roughly 538 square feet. The tool shows both numbers so you do not have to convert.

Should I include the ceiling?

Not in this tool. This is walls only. For the ceiling use the ceiling paint calculator or the room area calculator, which gives you the floor and ceiling area.

My room has five walls. What do I do?

Put the fifth wall into any of the four boxes along with another one, or just add its width to one of them. The tool only adds the widths together.

Do I measure in metres or feet?

Whichever your tape measure shows. Pick the matching unit at the top and the tool converts for you, then gives the answer in both.

How do I handle a sloped ceiling?

Measure the wall at its lowest point and work it out normally, then add the triangle at the top. A triangle is the base times the height divided by two.

Wall Area Calculator

What you measured in

Pick feet if your tape measure is in feet and inches.

Wall 1 width

Wall 2 width

Wall 3 width

Wall 4 width

Wall height

Doors to take off

Windows to take off

Your answer

Wall area to cover

49.2 m2

That is 529.6 square feet.

All walls added up: 18 m
Wall height: 3 m
Area before openings: 54 m2
Doors and windows taken off: 4.8 m2
Area in square feet: 529.6 sq ft

Doors count as 1.8 m2 each and windows as 1.5 m2 each. Set them to zero if you want the full wall area with nothing taken off.

Wall Area Calculator for Dubai and the UAE

This tool works out the area of your walls. It gives the answer in square metres and in square feet, because both are used in the UAE and quotes come in either one.

There is no paint in this tool. It is just the measurement. Once you have the number you can use it for paint, wallpaper, tiles, cladding or a quote.

It takes doors and windows off for you, so the number you get is the surface that actually gets covered.

How to measure a wall

You need a tape measure and two minutes. There is no trick to it.

Measure at waist height
Measure the width of each wall about a metre off the floor. Skirting and floor edges make measuring at the bottom awkward.
Measure height in a corner
Floor to ceiling, in a corner where the tape can stand straight. It is the same all round in nearly every flat.
Use all four boxes
Put each wall in its own box. If the room is a plain rectangle, walls one and three are the same and so are two and four.
More than four walls
Add the extra ones into any box. The tool only adds them together, so it does not matter which box they go in.

Square metres and square feet in the UAE

Both are used here every day, and mixing them up is an expensive mistake.

Property is usually advertised in square feet. Building materials are usually sold in square metres. So a flat listed as 1,200 square feet is about 111 square metres, and a tiler quoting per square metre is talking in a different unit from the listing you read.

One square metre is about 10.76 square feet. That is a big number, so the mistake is never small. If somebody quotes you 40 per unit and you assume the wrong unit, you are out by a factor of ten.

When you get a quote, always ask which unit. When you buy material, check the box. This tool shows both numbers side by side so you can hand either one over.

What to do with the number

Wall area is the starting point for a lot of jobs, not just painting.

Paint
Area times coats, divided by the coverage on the tin. The paint quantity calculator does it for you.
Wallpaper
Rolls are sold by length and width. Work out the area, then check how many square metres one roll covers, and add extra for matching the pattern.
Wall tiles or cladding
Area plus about ten per cent for cuts and breakages. Corners and edges use more than a flat run.
Putty and primer
Both are worked out from the same area figure, with their own rates. There is a calculator for each.
Getting a quote
A contractor can price a job much faster over the phone if you already know the area. It also lets you check the quote makes sense.

Rooms that are not simple rectangles

Most flats are boxes. Some rooms are not, and here is how to handle the common shapes.

An L shaped room is two rectangles pushed together. Measure each straight wall on its own and put them all in. The tool just adds widths, so it handles any number of straight walls.

A room with a sloped ceiling has a triangle at the top of two walls. Measure the wall at its lowest height, work it out normally, then add the triangles. A triangle is base times height divided by two.

A double height living room, which many Dubai villas have, is just a very tall wall. Measure the real height. It might be 5 m or 6 m, and using 3 m out of habit will halve your answer.

Curved walls are the hard one. Measure along the curve with a soft tape rather than straight across, then treat that length as the wall width.

Taking off doors and windows

The tool takes off a normal size for each: 1.8 square metres for a door and 1.5 for a window.

That is right for a standard interior door about 0.9 m wide and 2.1 m tall, and for a normal bedroom window.

It is not right for a balcony slider, a full height window or a double door. Those are much bigger and taking off a standard size leaves you with a number that is too high.

If your openings are unusual, set doors and windows to zero here to get the full wall area, then measure the openings yourself and take them off. Or use the wall paint calculator, which asks for the real sizes.

For a paint job, whether you take off a small window at all barely matters. For tiling or cladding, where material is expensive per square metre, it matters a lot.

Questions people ask

How do I calculate wall area?: Add the width of every wall together, then multiply by the ceiling height. That gives the total wall area. Take off the doors and windows to get the area you actually cover.
How many square feet is one square metre?: About 10.76 square feet. So a 50 square metre wall is roughly 538 square feet. The tool shows both numbers so you do not have to convert.
Should I include the ceiling?: Not in this tool. This is walls only. For the ceiling use the ceiling paint calculator or the room area calculator, which gives you the floor and ceiling area.
My room has five walls. What do I do?: Put the fifth wall into any of the four boxes along with another one, or just add its width to one of them. The tool only adds the widths together.
Do I measure in metres or feet?: Whichever your tape measure shows. Pick the matching unit at the top and the tool converts for you, then gives the answer in both.
How do I handle a sloped ceiling?: Measure the wall at its lowest point and work it out normally, then add the triangle at the top. A triangle is the base times the height divided by two.

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