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Knowing how to measure area in square feet (ft2) is not only very useful for business and rental properties, but it can also help you pass your upcoming geometry test. To measure the area in square feet of a space, you simply find the area in square feet of all the different parts of that space and then add them together. If you want to know how to measure area in square feet, follow these steps.

## Steps

### Find the Square Feet Area of a Space

**Divide the area into sections that you can control.**If you’re having trouble finding the area in square feet, it’s probably because you’re not working in a simple area with just one length and one width. The space can contain many squares that protrude in different places and can be shaped erratically. All you need to do is divide the space into squares or rectangles. To find the area in square feet of the entire space, you will need to find the square feet of each space and then add them together.

- Draw blurred lines to separate different parts.
- Name the spaces A, B, and C for easy distinction.

**Measure the length and width of the first space.**Using a ruler or tape measure, find the length and width of the first space you create – Space A.

- The length of the space is 12 feet, and the width is 15 feet.

**Multiply the length of the first space by the width of that space.**To find the area in square feet of space, simply multiply the length by the width, similar to calculating the area of a rectangle.

- Example: 12 feet x 15 feet= 180 square feet

**Measure the length and width of the second space, call it Space B.**The length of Space B is 20 feet and the width is 10 feet.

**Multiply the length of the second space by its width.**The result will be the area of the 2nd space in square feet. Here’s how you can find the area in square feet of space B:

- For example, 20 feet x 10 feet = 200 square feet.

**Measure the length and width of the third space, Space C.**The length of Space C is 20 feet and the width is 35 feet.

**Continue to multiply the length of the third space by the width of that space.**The result is the area in square feet of the third space. Here’s how you find the area in square feet of space C:

- Example: 20 feet x 35 feet = 700 square feet

**Then add the total area of the three spaces together.**Once you find the total area of these spaces, you have found the area in square feet of the whole space. Here’s how to calculate the area of the whole space:

- Area in square feet of Space A + area in square feet of Space B + area in square feet of Space C = area in square feet of the whole space
- 180 + 200 + 700 = 1080 square feet

### Learn a few Tricks to Calculate Area in Square Feet

**Find the area in square feet at approx.**If you’re looking for square feet as an approximation, you can also try measuring the outside of your home and then subtracting any areas that don’t count as square feet, for example like stairs or garage eaves.

**Find the area in square feet of a space shaped like a half circle.**If part of your house is shaped like a half circle, you can calculate the area in square feet of the whole circle and then divide it by two. To do this, simply measure the length of the line that divides the “circle” into two halves, i.e. the diameter of the circle.

- Then divide by 2 to get the radius, and calculate by the following formula A = πr^2 where r is the radius, and finally divide by 2 to get the area in square feet of the semicircle.

**Find the area in square feet of a space that is roughly proportioned.**If you are measuring a space that is roughly square or rectangular, with only a small corner missing from the square or rectangle, then you will measure the area of the whole space including the missing part of the square. or that rectangle. Then find the area of the missing part, and subtract the area of this missing part from the total area of the whole space; the remaining number is the area of the actual space you are looking for. This way will save you a lot of time.

## Advice

- If you have a space with an odd shape, divide it into smaller regular shapes, then measure the area of each shape, and add the results together.

wikiHow is a “wiki” site, which means that many of the articles here are written by multiple authors. To create this article, 26 people, some of whom are anonymous, have edited and improved the article over time.

This article has been viewed 7,826 times.

Knowing how to measure area in square feet (ft2) is not only useful for business and rental properties, but it can also help you pass your upcoming geometry test. To measure the area in square feet of a space, you simply find the area in square feet of all the different parts of that space and then add them together. If you want to know how to measure area in square feet, follow these steps.

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