The basic formula for calculating area is Length times Width (LxW). If you are estimating the area for a rectangle you’ll always use LxW. If you are calculating the area for a square you can multiply the length of one Side times itself, or (S2).
The illustration above shows a room 12′ wide by 20′ long.
Area calculated as:
L X W = AREA
20 X 12 = 240 SQUARE FEET
When calculating the area for a structure with multiple sections, like an L-shaped home, divide the structure into two sections, then calculate the area for each section and add them together.
For example, in the L-shaped structure above the two sections have been divided to calculate the total area. Section one is 28 X 48. Section two is 20 X 16. The area calculation is:
SECTION ONE 28 X 48 = 1344 SQFT
SECTION TWO 20 X 16 = 320 SQFT
TOTAL = 1664 SQFT
When a structure has multiple ells or sections you can use a calculator with the memory feature to calculate the total square footage. First, divide the structure into logical square or rectangular sections. Then calculate the square foot area for each section, adding the calculation for each into memory plus on the calculator as you go.
FAQs
Calculating the amount of wood in square feet can be done by first determining the area of the wood surface . This can be done by multiplying the length and width of the wood in feet . For example , if a piece of wood is 10 feet long and 5 feet wide , the area would be 50 square feet ( 10 x 5 = 50 ) .
How do you calculate how much lumber you need? ›
A single board foot is one square foot of wood that is one inch thick. You can measure board feet by multiplying length x width x thickness in inches, and then dividing by 144. If ordering a large amount by board feet, just multiply the total board feet needed by the price per board foot for the total cost.
What is the formula for the area of a door? ›
The basic formula for calculating area is Length times Width (LxW). If you are estimating the area for a rectangle you'll always use LxW. If you are calculating the area for a square you can multiply the length of one Side times itself, or (S2).
How to calculate area calculation? ›
To find the area of a rectangle or a square you need to multiply the length and the width of a rectangle or a square. Area, A, is x times y.
How do you calculate wood work area? ›
Here's a basic wood calculator formula to get you started: Area in sq ft equals length (ft) x width (ft). A room 10 feet wide by 10 feet long has a square footage of 100 square feet. Multiply the width (10 ft) by the length to get the square footage (10 ft).
What is the formula for finding area? ›
Area Formulas
Area of a rectangle is the length times the width. Area of a parallelogram is base times the height. Area of a trapezoid is one half the sum of the two bases times the height. Area of a circle is π times the square of the radius.
How do you calculate wood for a door? ›
Cubic Feet = Length x Width/ Breadth x Height
I hope you got an idea on how to do calculation of wooden cft. If you have any doubts related to the same, please drop a comment below. Use the NoBroker Carpenter Services to install the perfect wooden door frame in your flat!
How do you calculate square footage of a door? ›
Now measure each door and window for height and width. Multiply height times width to get the square footage of each, and total all the doors and windows.
How do you manually calculate area? ›
Multiply the length and width together. Once both measurements are converted into meter, multiply them together to get the measurement of the area in square meter.
How do I estimate an area? ›
The simplest (and most commonly used) area calculations are for squares and rectangles. To find the area of a rectangle, multiply its height by its width. For a square you only need to find the length of one of the sides (as each side is the same length) and then multiply this by itself to find the area.
Surface measure (SM) is the surface area of a board in square feet. To determine surface measure, multiply the width of the board in inches by the length of the board in feet and divide the sum by 12, rounding up or down to the nearest whole number.
What is the formula for measuring wood? ›
The formula is: T x W x L = Board ft. 3. LINEAL MEASURE - is the total length in feet of a board, regardless of its thickness or width, i.e. a 2 x 14 one foot long is one lineal foot. Example: A lineal foot of 3 x 5 = 1.25 bf.
What is the general formula of wood? ›
In actuality wood is mostly cellulose, which are long chains of interlinked glucose molecules. There are many other elements – essential plant nutrients – caught up in the wood. If we add Calcium (Ca) on the reactant side of the equation, representing a key nutritional element, our final wood formula is: C6H12O6 + Ca.
How do you find the cross sectional area of wood? ›
Cross-sectional area is determined by squaring the radius and then multiplying by 3.14. For example, if a tree is measured as 10” DBH, the radius is 5”. Multiplying 5 by 5 equals 25, which when multiplied by 3.14 equals 78.5. Thus, the cross-sectional area of a 10” DBH tree is 78.5.
