Linear foot square foot calculator

Part 1: Square Footage. Square footage is a fundamental measurement used in construction and real estate. It refers to the total area of a space, typically measured in square feet. Knowing how to calculate square footage accurately ensures you order the right amount of materials and stay within budget. Step-by-Step Guide to Calculating Square ...

Linear foot square foot calculator. Calculate the length of one side of the square by dividing the perimeter by 4. So if the perimeter of the square is 32 feet, you have: 3 2 f t 4 = 8 f t. \frac {32 \text { ft}} {4} = 8 \text { ft} 432 ft. . = 8 ft. Note that you carry the unit of measure – feet – along throughout your calculations. Compute the area of the square by ...

Example. Imagine you have a shipment of 100 feet, with a length limitation of 10 feet per LTL shipping unit. Using the formula: Linear Feet = 100/10=10. The calculator would determine that there are 10 linear feet.

To calculate linear feet for kitchen cabinets, simply measure the length in inches, then divide by 12 to figure out the actual linear feet. For example, a 10' x 10' kitchen has two walls with 10 feet each (or 240 inches if you add them together). Divide this measurement by 12 and you'll get a total of 20 linear feet (LF).In April 2024 the cost to Install Fascia Boards starts at $7.30 - $11.12 per linear foot. Use our Cost Calculator for cost estimate examples customized to the location, size and options of your project. To estimate costs for your project: 1. Set Project Zip Code Enter the Zip Code for the location where labor is hired and materials purchased.Most homeowners report spending an average of $950-1,200 to install 100 ln.ft. of gutters by a contractor. On the high end, metal gutters such as Copper or Zinc cost as much as $2,500-$4,000 for 100 linear feet, while prices for budget friendly vinyl gutters can be as low as $500-600 (for DIY install).Get the Total Square Footage. ... Divide the linear footage by 12′ to find the number of boards needed to cover the wall. If you have a board with a different length, such as 16′ or 20′, you will divide by that number. ... 21 × 20 = 420 420 ÷ 12 = 35. Learn more about how to calculate linear feet. Always order at least 10% extra to ...A board foot is a unit of volume, traditionally used for timber, equal to 144 cubic inches (12 inches long by 12 inches wide by 1 inch thick). Many lumber yards price hardwood using the board foot as the standard unit of measurement. Unlike softwoods, which are often sold by linear or square feet, hardwoods vary in width and thickness.In feet it would be 2.333x4.75 = 11.08 If we calculated the square footage in inches, it comes out to - 28x57=1596 1596÷144=11.08 Square feet is the most accurate way to track a customer's usage. Almost all Wide format printers have a square footage meter in the machine.

Calculate your square footage by multiplying the length of the space by the width of the space. For example, if the room measures 12 feet long and 10 feet wide, the flooring area is 120 square feet.Technically, a linear foot is a measurement that is 12 inches long (so, one foot) and that is measured in a straight line, which is why it's called linear. Square Feet vs. Linear FeetDiameter squared x 2.945 = Weight in pounds per Linear Foot. Octagons* = Diameter squared x 2.817 = Weight in pounds per Linear Foot. Plates, Sheets & Flats = Thickness x Width x 3.45 = Weight in pounds per Linear Foot. Plate Circles = Diameter squared x thickness x .2225 = Weight per Circle. Round Tubing = 10.68 x (O.D. - W.T.) x W.T. Square ...A linear foot of cabinet typically refers to one foot of cabinet length. The cost of cabinets is often calculated per linear foot, which can vary widely depending on factors like materials and design. For instance, budget cabinets may cost around $100 per linear foot, while high-end custom cabinets can exceed $1,000 per linear foot.1×4: 1 board foot = 4 linear feet; 1×6: 1 board foot = 3 linear feet; 1×8: 1 board foot = 2 linear feet; 1×10: 1 board foot = 1.44 linear feet; Keep in mind that these are rough estimates, and actual dimensions may vary depending on the specific lumber size and supplier. How can I calculate the cost of lumber using board feet?

The square footage cost calculator exactly as you see it above is 100% free for you to use. If you want to customize the colors, size, and more to better fit your site, then pricing starts at just $29.99 for a one time purchase. Click the "Customize" button above to …Then, multiply these two numbers together to get the area in square inches. Finally, to convert to square feet, divide this number by 144 (since one square foot is 144 square inches). For example, if a pane of glass is 60 inches wide and 80 inches tall, the area in square inches is 5,040 (60 x 84). Divide this by 144, and you get 35 square feet.5. 25. This table shows the area in square feet for different dimensions when converting linear feet to square feet. To find the square footage of an area, multiply the length by the width. For example, if you have a length of 4 linear feet and a width of 3 linear feet, the area would be 12 square feet (4 feet x 3 feet = 12 square feet).Multiply length by width: Multiply the length in lineal feet by the width in feet. This will give you the square footage. For example, if you have a room with a length of 20 lineal feet and a width of 10 feet, the square footage would be 200 square feet (20 lf × 10 ft = 200 sq ft).

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Square foot. Definition: A square foot (symbol: sq ft) is a unit of area used in the imperial and US customary systems (UCS). It is defined as the area of a square with one-foot sides. One square foot equals 144 square inches. History/origin: The origin of the square foot can be seen in the term itself. It is a measurement derived from the area of a square with a side length measured in feet.Enter the total square feet: Total Square Feet: The amount of square feet that you need to cover is: Size Options and Costs. 1 x 6 Aspen T&G Board Feet = $. 1 x 6 Aspen 8' T&G Board Feet = $. 1 x 6 Aspen 10' T&G Board Feet = $. 1 x 6 Aspen 12' T&G Board Feet = $. 1 x 8 Aspen T&G Board Feet = $.Enter the area in square feet ( sq ft, ft2): If the width of linear feet measured in feet: Enter the width in feet (ft): Length in linear feet (LF) is: 0.00 LF. If the width of linear feet measured in inch: Enter the width in inch (in): Length in linear feet (LF) is:Using basic math, pest management professionals must calculate the appropriate linear footage (the actual length of an object) and square footage of a structure to be treated. ... is to be a surface application and one of the things specified in a termiticide label is to treat at 1 gallon per 10 square feet. That’s an important measurement ...

Simply measure the width and length of your Ipe deck, fencing or siding space. Then times the two numbers together. I.E. 20ftx20ft is 400 feet. This is the total square footage you need. That is what the square footage calculator above is for. Then take that number and enter it into the square feet to linear feet calculator above with the width ...Method 1. Measuring Linear Feet in General. Download Article. 1. Measure the lengths of the pieces you need. Review the design plan for your project. Identify all …Here we will explain and show you how to convert 40 square feet to linear feet (40 sq ft to linear ft). Square feet (sq ft) is the measurement of an area which is calculated by multiplying the width of the area by the length of the area. Furthermore, linear feet (linear ft) is the length of an area. Therefore, to convert 40 square feet to ...Square foot. Definition: A square foot (symbol: sq ft) is a unit of area used in the imperial and US customary systems (UCS). It is defined as the area of a square with one-foot sides. One square foot equals 144 square inches. History/origin: The origin of the square foot can be seen in the term itself. It is a measurement derived from the area ...Quick conversion chart of inches to linear foot. 1 inches to linear foot = 0.08333 linear foot. 10 inches to linear foot = 0.83333 linear foot. 20 inches to linear foot = 1.66667 linear foot. 30 inches to linear foot = 2.5 linear foot. 40 inches to linear foot = 3.33333 linear foot. 50 inches to linear foot = 4.16667 linear foot.Jan 18, 2024 · board feet = length(ft) × width(in) × thickness(in) / 12. board feet = 8 × 10 × 1.25 / 12. board feet = 8.33 BF. Now, multiply this result by the number of pieces to obtain the total board footage of your purchase: 5 × 8.33 = 41.67 BF. Finally, you can multiply this value by the price per board foot to determine the total cost of your ... From here, you can determine the width of the roofing material being used. You can divide the total square footage by the width of the material to get the linear feet required. If we take the earlier result of 200 square feet, and then divide that by a material width of 3 feet, then we need 66.7 linear feet of material.The linear feet calculator operates by taking the total length of items and dividing it by a specified length limitation per Less Than Truckload (LTL) shipping unit. It allows professionals to compute linear feet quickly, ensuring efficient planning and resource allocation. See also Grain Bin Capacity Calculator Online.To calculate the total linear foot of horizontal reinforcing, we first need to find the total square... Calculate the total linear foot of horizontal reinforcing for a masonry wall that is 190 feet long by 4 feet tall. Figure 0.5 linear feet of reinforcing per square foot of wall. Add 5% waste. Round up to the nearest foot.A linear foot is used to measure the length of a wood surface as well as the height, and short distances, Board foot is used to measure the volume and size of a wood board by multiplying the length and width in feet with thickness in inches. Linear feet when calculated will lead to the volume in cubic feet.Finally, the third property has 2,400 square feet of floor space and sells for $400,000. Let's calculate the price per square foot for all three properties: property 1 price per sqft = $290,000 / 1,400 = $207.14. property 2 price per sqft = $310,000 / 1,200 = $258.33. property 3 price per sqft = $400,000 / 2,400 = $166.67.MAILING ADDRESS Trestlewood PO Box 1050 Pleasant Grove, UT 84062-1050 Toll Free 877.375.2779 Fax 801.443.4007

Hit 'Calculate': Once you have entered your measurements, simply click on the ‘Calculate’ button. Our calculator will instantly compute and display the equivalent area in square …

Multiple Width (Equal Linear Feet) Calculator. Total SF Needed: Sq Ft. Trestlewood makes no representations or warranties whatsoever relative to the accuracy of this calculator (or any of its other calculators) and accepts no liability or responsibility for results obtained from same. Any user of this or any other Trestlewood calculator takes ...You can convert board feet to a per lineal foot amount based on the thickness and width of the lumber. To get one board foot in 1 x 2's, you will need six lineal feet of 1 x 2's. For 1 x 12's, you will need one lineal foot of 1 x 12. A lineal foot (Lf) is 12 inches long. Twenty feet is the same as 20 lineal feet, and no conversion is needed ...Step 2: Calculate. Enter only the information needed for your desired calculation. You can calculate the area of your wall by multiplying the length of the wall by the height (expressed in feet). Be sure to subtract the area of any openings (e.g. doors or windows). These calculations are based on the brick selected in Step 1.How many square feet in a linear feet? Square feet=linear feet * width of one linear feet. Sq ft = LF * width of one LF.Choose your room's shape: Rectangle - input the lengths of two walls that touch the same corner; Square - input the length of one wall; and. Other - enter the total measured length of all the walls. 💡 If you are painting or wallpapering, you can also calculate the wall square footage needed for walls of any shape using our area calculator.This is simply 100 square feet of roof. To find the squares, divide the overall roof area by 100 and then round up. For instance, if the roof is 1550 square feet, then it is 16 squares. How to Estimate Roofing Materials. Although roofing projects are estimated and sold by the square, roofing material is often not sold in 1-square increments.1 square yard equals 0.8361 square meters. 1 square meter equals 1.195 square yards. How to Calculate Square Foot to Square Yard. Let's be honest - sometimes the best square foot to square yard calculator is the one that is easy to use and doesn't require us to even know what the square foot to square yard formula is in the first place!Part 1: Square Footage. Square footage is a fundamental measurement used in construction and real estate. It refers to the total area of a space, typically measured in square feet. Knowing how to calculate square footage accurately ensures you order the right amount of materials and stay within budget. Step-by-Step Guide to Calculating Square ...A square foot = 144 sq. in. Therefore, you divide the number of square inches total by a square foot (144 sq. in.), and you get your total square feet of siding in each panel: 1440 sq. in./144 sq. in. = 10 sq. ft. Sometimes, your exterior wall height will be a few inches taller than the height of accumulated panels.

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Calculate your square footage by multiplying the length of the space by the width of the space. For example, if the room measures 12 feet long and 10 feet wide, the flooring area is 120 square feet. Video of the DayThough circles never have a fixed width, you an calculate one's area to find the linear footage of a similarly sized 1-foot board. Measure the circle's radius. For this example, consider a circle with a radius of 10 feet. Square the radius: 10^2 = 100 square feet. Multiply the result by pi, which equals approximately 3.142: 3.142 x 100 = 314.2.This square yards calculator - an example. Imagine you want to put on some turf in your garden, but all you have is the width and length of the fence in feet. Yet, in the shop, they ask for the area given in square yards. Width - 120 ft. Length - 80 ft. yardage = 120 ft × 80 ft yardage = 120f t×80f t. yardage = 9600 ft^\text {2} yardage ...The area of the fence is. 6 × 100 = 600 \text { square feet} 6×100 = 600 square feet. The width of the fence boards, including the 1-inch gap between them, is 6 1/2 inches. A foot has 12 inches, so the width can be expressed as. \frac {6.5} {12} = 0.54 \text { feet} 126.5 = 0.54 feet. The number of linear feet of fencing boards you need is then.UNLV Libraries -> Special Collections -> Cubic & Linear Foot Calculator. Rebel Archives Calculator: for cubic and linear feet. · This tool estimates space occupied based on the exterior of each container (including the lid). · It uses the width entered for each box to convert cubic feet to linear feet. · Check out the calculator tips for ... The diameter should be measured in feet (ft) for square footage calculations and if needed, converted to inches (in), yards (yd), centimetres (cm), millimetres (mm) and metres (m). The formula: Circumference of a Circle = π x d π = 3.142 d = Diameter (drop down ft, in, yd, cm, mm, m) Abbreviations of unit area: ft 2 , in 2 , yd 2 , cm 2 , mm ... Board Foot: 200 inches (length) X 50 inches (Width) X 2 inches (Thickness) Divide Length & Width which is in inches by 12 to convert them into feet: = (200/12) X (50/12) X (2) =16.6666 x 4.1666 x 2. = 138.88 Board Feet. Note: If measurements are taken in feet then there is no need to convert them into feet by dividing by 12, simply multiply ...Fortunately, with the help of a Pool Square Footage Calculator, you can quickly determine the size of a pool that will comfortably fit in your yard. Simply input a few details about the pool you want, such as shape, depth, and intended usage. This calculator will provide an estimate of the square footage required to get the pool of your dreams.Build Your Roof™ empowers you to select each layer and component that goes into your Total Protection Roofing System® + so that you get the roof you want to protect your home. Corning®. Let Owens Corning Roofing help you calculate exactly how much ventilation you will need for a healthy and balanced attic, with our 4-step ventilation ... ….

Once you know the cost of a particular board at its price per board foot, divide that dollar amount by the number of lineal feet in the board and that will be the cost per lineal ft. For example: an eight foot long board that is 10" wide and sells for $5.00 per brd. ft. 96"x10"=960 square inches 960 divided by 144=6.6 brd ft 6.6 brd. ft. x $5. ...Linear footage doesn’t account for the thickness or width of a particular item like board footage and square footage do. To calculate linear footage you are concerned only with the length of the item. For example, if you need 10 pieces of 16’ clapboard then you need 160 linear feet of siding (10 X 16 = 160). Linear footage yields the least ...Product Square Feet Needed Multiply By Lineal Feet Needed Recommended Waste Factor Total Lineal Feet Needed Exterior Wood Finishes 1x10 Channel Rustic Cedar (Includes 1x10 Shiplap) X 1.41 = X 1.12 = 1x10 Channel Rustic Cedar Utility X 1.41 = X 1.20 = 1x8 Channel Rustic ...The linear feet calculator operates by taking the total length of items and dividing it by a specified length limitation per Less Than Truckload (LTL) shipping unit. It allows professionals to compute linear feet quickly, ensuring efficient planning and resource allocation. See also Grain Bin Capacity Calculator Online.The formula for calculating the square footage of your garden is quite simple: Area = Length × Width. To find the square footage of irregularly shaped gardens, you can divide it into smaller, more manageable shapes (like rectangles or triangles) and calculate the area of each shape separately. Then, sum up the areas of all the shapes to get ...Estimate the total square footage of the space, by inputting the length and width of the space. If the space is non-rectangular, estimate the equivalent rectangular dimensions. Width of room, in linear feet. Length of room, in linear feet. Ceiling height, in linear feet.Square Feet to Linear Feet Conversion Calculator. Coverage Area (SF) SF to LF. LF to SF. Multiple Width (Equal LF) Square Feet to Linear Feet Conversion Calculator.Here we will explain and show you how to convert 2000 square feet to linear feet (2000 sq ft to linear ft). Square feet (sq ft) is the measurement of an area which is calculated by multiplying the width of the area by the length of the area. Furthermore, linear feet (linear ft) is the length of an area. Therefore, to convert 2000 square feet to ...If a room is 12' 6" by 8' 3", you can either convert the measurements to decimal notation and multiply, or you can convert both measurements to inches, multiply them, and convert the result back to feet. Method 1: 12' 6" x 8' 3" = 12.5' x 8.25' = 103.125 square feet. Method 2: 12' 6" x 8' 3" = 150" x 99" = 14,850 square inches = 103.125 square ... Linear foot square foot calculator, Building a home is an exciting process, but it can also be overwhelming. One of the most important considerations when building a home is understanding the cost per square foot., The Acres to Linear Feet Calculator is a valuable tool for anyone involved in real estate, construction, or land management. It simplifies the conversion of land area measurements, typically given in acres, to linear measurements in feet. ... 43560 is the number of square feet in one acre. This formula helps you determine the length of one side ..., The pound per square foot is a US customary and imperial unit of pressure. Pounds per square foot can be abbreviated as psf; for example, 1 pound per square foot can be written as 1 psf. PSF can be expressed using the formula: 1 psf = 1 lbf ft 2. Pressure in pounds per square foot are equal to the pound-force divided by the area in square feet., UNLV Libraries -> Special Collections -> Cubic & Linear Foot Calculator. Rebel Archives Calculator: for cubic and linear feet. · This tool estimates space occupied based on the exterior of each container (including the lid). · It uses the width entered for each box to convert cubic feet to linear feet. · Check out the calculator tips for ..., Here we will explain and show you how to convert 150 square feet to linear feet (150 sq ft to linear ft). Square feet (sq ft) is the measurement of an area which is calculated by multiplying the width of the area by the length of the area. Furthermore, linear feet (linear ft) is the length of an area. Therefore, to convert 150 square feet to ..., Calculate the length of one side of the square by dividing the perimeter by 4. So if the perimeter of the square is 32 feet, you have: 3 2 f t 4 = 8 f t. \frac {32 \text { ft}} {4} = 8 \text { ft} 432 ft. . = 8 ft. Note that you carry the unit of measure - feet - along throughout your calculations. Compute the area of the square by ..., The average cost of a chain link fence by height is as follows: 3 ft. - $5 per linear foot, 6 ft. - $7 per linear foot, 8 ft. - $12 per linear foot, 10 ft. - $16 per linear foot. Prices may vary slightly based on the supplier. The heights listed below are the most common for residential uses. listed below are the most common residential ..., Example. Imagine you have a shipment of 100 feet, with a length limitation of 10 feet per LTL shipping unit. Using the formula: Linear Feet = 100/10=10. The calculator would determine that there are 10 linear feet., 3/8 = 3 ÷ 8 = .375 inches. Convert any feet to inches by multiplying the number of feet by 12, since there are 12 inches in a foot. Using a foot to inch conversion calculator also simplifies this step. For example: 3 feet = 3 × 12 = 36 inches. For any other units of measurements, use our length converter to convert these units to decimal inches., Step 3. Convert the inches to feet by dividing the total number of inches by 12. The result is equal to the linear feet of your item. Advertisement. In most instances, the term "foot" refers to a linear foot. A linear foot is equal to 12 inches, or 1 foot. It isn't necessary to convert feet to linear feet because they are one and the same., More information from the unit converter. How many feet in 1 linear foot? The answer is 1. We assume you are converting between foot and linear foot.You can view more details on each measurement unit: feet or linear foot The SI base unit for length is the metre. 1 metre is equal to 3.2808398950131 feet, or 3.2808398950131 linear foot. Note that rounding errors may occur, so always check the ..., Calculate Square Footage, Lineal Footage and Waste Factor. Calculate the amount of stone veneer needed for a thin veneer project with our stone veneer calculator, including your waste factor.Natural stone installation requires masonry techniques such as cutting, splitting, sorting, and trimming stones to fit the desired finished area., Planks are typically 4 to 6 inches wide by 3 or 4 feet long. Like vinyl tile, wood vinyl flooring is also waterproof. Vinyl sheet flooring comes in larger 6- or 12-foot widths that are either cut to fit or come in prepared rolls. Sheet vinyl is ideal for high-moisture rooms like bathrooms. Luxury vinyl plank offers the most realistic look and ..., May 17, 2021 ... Here is a useful linear foot calculator created by Woodgrain moulding specialists to calculate your total number of linear feet needed. Have ..., Here we will explain and show you how to convert 200 square feet to linear feet (200 sq ft to linear ft). Square feet (sq ft) is the measurement of an area which is calculated by multiplying the width of the area by the length of the area. Furthermore, linear feet (linear ft) is the length of an area. Therefore, to convert 200 square feet to ..., Step Two: Calculate the Amount of Flooring You Need. For vinyl, laminate, or hardwood, plug your lengths and widths into the calculator above. To calculate yourself, multiply the length times the width in feet to find the square footage. We suggest adding 10% extra material to allow for waste, placing seams, and matching patterns., Understanding the Square footage: To understand how to calculate square footage we must first begin with the definition of area. An area is the size of a two-dimensional surface. The area of a triangle is the space contained within its 3 sides. To find out the area of a triangle, we need to know the length of its three sides., To calculate linear feet for kitchen cabinets, simply measure the length in inches, then divide by 12 to figure out the actual linear feet. For example, a 10' x 10' kitchen has two walls with 10 feet each (or 240 inches if you add them together). Divide this measurement by 12 and you'll get a total of 20 linear feet (LF)., Step 3: Calculate the Square Footage. To calculate the square footage, multiply the width by the length. For example, if the width of the room is 10 feet and the length is 12 feet, the square footage would be 120 square feet (10 x 12 = 120). Step 4: Determine the Linear Footage, The answer is 0.11111111111111. We assume you are converting between yard and square foot . You can view more details on each measurement unit: yard or sq ft The SI derived unit for area is the square meter. 1 square meter is equal to 1.1959900463011 yard, or 10.76391041671 sq ft. Note that rounding errors may occur, so always check the results., What’s more all-American than an American company designing a smartphone for the US market, to be manufactured in a half-million square foot factory in Texas? Nothing, says Google’..., Roofing labor cost per square foot. Roofing labor costs $2.00 to $3.50 per square foot on average or $200 to $350 per square to install shingles, not including materials and supplies. Installing a metal roof costs $4.00 to $8.00 per square foot for labor alone. Roofers charge $30 to $100 per hour for labor., MAILING ADDRESS Trestlewood PO Box 1050 Pleasant Grove, UT 84062-1050 Toll Free 877.375.2779 Fax 801.443.4007, A few calculators have been added for your convenience of use. This might quickly assist your project size and budgeting. How Are Linear Feet and Square Feet Different? Linear footage is a measurement of length or distance of material, while square footage is a measurement of the area of a space. These are different because linear footage ..., Aug 19, 2023 · The linear feet calculator operates by taking the total length of items and dividing it by a specified length limitation per Less Than Truckload (LTL) shipping unit. It allows professionals to compute linear feet quickly, ensuring efficient planning and resource allocation. See also Grain Bin Capacity Calculator Online. , Divide by 144 to convert to square feet. Measure smaller areas individually. Then, add all your areas together. Plug the total lengths and widths into the calculator above. You can easily find the square footage of your project using our square footage calculator., You can also use a square feet calculator to easily find the square footage of your brick. Step Three: Find How Many Bricks Fill the Wall. You can determine the number of bricks needed to cover your area by dividing the square footage of the area to be covered by the brick’s square footage (wall sq ft ÷ brick sq ft)., Square feet do not “contain” linear feet, but they are calculated using linear feet as units of measurement. Square feet are two-dimensional measurements, whereas linear feet are o..., The Concrete Calculator estimates the volume and weight of concrete necessary to cover a given area. Purchasing slightly more concrete than the estimated result can reduce the probability of having insufficient concrete. ... Slabs, Square Footings, or Walls. Length (l) Width (w) Thickness or Height (h) Quantity : Hole, Column, or Round Footings ..., The average cost of a chain link fence by height is as follows: 3 ft. - $5 per linear foot, 6 ft. - $7 per linear foot, 8 ft. - $12 per linear foot, 10 ft. - $16 per linear foot. Prices may vary slightly based on the supplier. The heights listed below are the most common for residential uses. listed below are the most common residential ..., Here we will explain and show you how to convert 480 square feet to linear feet (480 sq ft to linear ft). Square feet (sq ft) is the measurement of an area which is calculated by multiplying the width of the area by the length of the area. Furthermore, linear feet (linear ft) is the length of an area. Therefore, to convert 480 square feet to ..., To calculate linear feet for kitchen cabinets, simply measure the length in inches, then divide by 12 to figure out the actual linear feet. For example, a 10’ x 10’ kitchen has two walls with 10 feet each (or 240 inches if you add them together). Divide this measurement by 12 and you’ll get a total of 20 linear feet (LF)., Surface Area (in square feet) = 2 x (Length x Width) + Width x Depth + Length x Depth. Let's break down this formula with an example. For a pool that is 20 feet long, 10 feet wide, and 5 feet deep, the surface area would be calculated as follows: Surface Area = 2 x (20 x 10) + 10 x 5 + 20 x 5. Surface Area = 400 + 50 + 100.