How to Calculate Square Feet of a 2-Story House

How to Calculate Square Feet of a 2-Story House

When it comes to buying, selling, or renovating a home, knowing its square footage is crucial. Square footage not only affects the property’s value but also determines how much space you have to live in comfortably. In this article, we will guide you through the process of calculating the square feet of a 2-story house, allowing you to make well-informed decisions and plan your living spaces efficiently.

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Understanding Square Feet

2.1 Definition of Square Feet

Square feet (sq. ft.) is a unit of measurement used to quantify the total area of a space. One square foot is equivalent to a square with sides that are each one foot long. It is commonly used to measure the size of rooms, houses, land, and commercial properties.

2.2 Importance of Calculating Square Feet

Knowing the square footage of a 2-story house is essential for various reasons. It helps you determine the appropriate size of furniture and fixtures, estimate renovation costs, and accurately compare properties. Additionally, real estate agents, appraisers, and potential buyers often consider square footage while assessing a property’s value.

Measuring the First Floor

3.1 Gather the Necessary Tools

Before you begin measuring, gather a tape measure, a notepad, and a pen. Having a sketch of the house’s layout can also be helpful.

3.2 Measure the Length and Width of Each Room

Start by measuring the length and width of each room on the first floor. Measure from wall to wall, excluding closets, pantries, and other non-living spaces.

3.3 Calculate Area for Each Room

To find the area of each room, multiply the length by the width. For example, if a room is 12 feet long and 10 feet wide, the area would be 120 square feet.

3.4 Add Up the Areas to Find Total First Floor Square Feet

Add together the areas of all the rooms on the first floor to determine the total square footage of the first level.

Measuring the Second Floor

4.1 Account for Sloped Ceilings (If Applicable)

If your 2-story house has rooms with sloped ceilings, the measurement process can be a bit tricky. Measure the length and width at the highest points of the room and use these dimensions for accuracy.

4.2 Measure Each Room’s Length and Width

Similar to the first floor, measure the length and width of each room on the second floor.

4.3 Calculate Area for Each Room

Multiply the length by the width of each room to find the area.

4.4 Total Second Floor Square Feet

Add up the areas of all the rooms on the second floor to determine the total square footage of the upper level.

Calculating Total Square Feet of the 2-Story House

Sum up the square footage of the first floor and the second floor to find the total square footage of the 2-story house.

Considering Staircases and Common Areas

Remember to account for staircases and common areas, such as hallways and foyers, when calculating the total square footage. While these spaces may not be living areas, they are essential components of the house.

Converting Square Feet to Other Units

7.1 Square Meters

To convert square feet to square meters, multiply the total square footage by 0.0929. For example, if the house is 2000 sq. ft., it would be approximately 185.81 sq. meters.

7.2 Acres

To convert square feet to acres, divide the total square footage by 43,560. For instance, a 2-story house with 4000 sq. ft. would be approximately 0.09 acres.

7.3 Square Yards

To convert square feet to square yards, divide the total square footage by 9. For instance, a 2500 sq. ft. house would be approximately 277.78 sq. yards.

The Impact of Odd-Shaped Rooms

Odd-shaped rooms, such as circular or irregular spaces, can be challenging to measure accurately. Break these rooms into smaller, more manageable shapes, measure each section, and then sum up the areas to get the total square footage.


Q1. Can I use an online square footage calculator?

Yes, several online square footage calculators can help you estimate the total square footage of your 2-story house quickly. However, manual measurement is more accurate and recommended.

Q2. Is the square footage the same as the living area?

No, the square footage includes all the space within the house, including living areas, hallways, closets, and other non-living spaces.

Q3. How does the square footage affect a home’s value?

Generally, larger square footage contributes to a higher property value. However, various factors, such as location and property condition, also play significant roles in determining a home’s value.

Q4. Why is it essential to know the square footage of a 2-story house?

Knowing the square footage helps you plan the interior layout efficiently, make informed buying or selling decisions, and accurately price the property.

Q5. Can I include the garage in the square footage calculation?

In most cases, the garage is not included in the square footage calculation, as it is considered a separate structure.


Calculating the square footage of a 2-story house is a vital step for homeowners, buyers, and sellers alike. By following the outlined steps, you can accurately determine the total square footage, enabling you to make informed decisions about your property. Remember to consider odd-shaped rooms, common areas, and conversions to other units for a comprehensive understanding of your house’s size.

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