Like in lumber, a board foot is a ft2 of spray foam insulation that’s one-inch thick. This type, however, will require a thicker coating to attain the right R-Value. Real-time graphics. Re: board feet to sq ft I'm not sure if I understood your question but I'll give it my best shot. This means that you can also use the board feet converter for this measurement. Therefore, we have:eval(ez_write_tag([[250,250],'calculators_io-large-leaderboard-2','ezslot_8',111,'0','0'])); You can also apply board foot computations to other products like spray foam installations. Measurements will depend upon the type of foam insulation. How do you figure board feet in spray foam? Another way of expressing this is that it’s 1/12 of a cubic foot. It even has an added function to help you estimate the cost of the materials for your project. £ (pound sterling) Just remember that one board foot is equal to a volume of one square foot that’s an inch thick. Input the length, width, and thickness of the boards you anticipate using in the associated fields. You can also input the number of boards required. BF = board feet . ft.}$$, Multiply by the total number of boards (10) to get the total number of board feet:$$\text{Total board feet = 1.875 × 10 = 18.75 bd. Computations may be confusing, but with the help of this board feet calculator, the task is a lot easier. When you are figuring up board feet, keep in mind a waste factor. Calculate the number of board feet in one of the boards:$$\text{Board feet in one board} = {2.5 × 4.5 × 2 \over 12} = \text{1.875 bd. Boards are sold in all different sizes. How many board feet are in a 2 by 4 by 8 foot long? It has the dimensions, $$\text{1 ft (length) × 1 ft (width) × 1 in (thickness)}$$, Therefore, a single board foot has volume (in cubic inches) equal to, $$\text{12 in × 12 in × 1 in = 144 in}^3$$, Or, equivalently, the volume in the units ft. in² is, $$\text{1 ft × 12 in × 1 in = 12 ft. in}^2$$. Apply these numbers in the formula to determine the number of board feet for each piece. Some Common Fractions: 1/32 = .03125, 1/16 = .0625, 1/8 = .125, 1/6 = .167, 1/3 = .334, 3/8 = .375, 5/8 = .625, 7/8 = .875 Just remember that one board foot is equal to a volume of one square foot that’s an inch thick. $$\text{Volume of board = length (ft) × width (in) × thickness (in)}$$. € (euro) For closed-cell spray foam, the R-Value is much higher, around 6.5/inch. Think about what sizes you need. Put it all together to arrive at a single board foot formula: $$\text{Total board feet} = {\text{length (ft) × width (in) × thickness (in)} \over 12} × \text{number of boards}$$. This is because the length is usually expressed in feet, the thickness, and width, in inches. Usually, both these lumber products may have a somewhat similar in shape and size, but they differ in the calculation of cost. Let's say we have a one-inch thick board that is 12 inches long by twelve inches wide. But buying in bulk from wholesalers and hardwood dealers will entail computations by board foot. Manufacturers of the product use the same measurement in computing the amount of coverage of spray foam to install. In general, we express the thickness of lumber in increments of a quarter-inch. You may also be interested in our Square Footage Calculator, A collection of really good online calculators. Click on the "Calculate" button to generate the results. They will compute your order by board feet. It’s not as confusing as it sounds — as long as you remember that a board foot is a measure of volume equal to a square foot one inch thick. Square Feet to Lineal Feet Convert square feet to lineal feet. The thickness of the lumber is important in board foot calculations. You can use this board foot calculator to compute the quantity of board feet (bd. Assume the pieces have a length of 8 feet, a width of 10 inches, and a thickness of 1.25-inches. ¥ (yen). Then enter the values for the Thickness, Width, and Length, and choose the unit of measurement from the drop-down menu. 8 Boards to Square Feet = 0.6667: 500 Boards to Square Feet = 41.6667: 9 Boards to Square Feet = 0.75: 600 Boards to Square Feet = 50: 10 Boards to Square Feet = 0.8333: 800 Boards to Square Feet = 66.6667: 20 Boards to Square Feet = 1.6667: 900 Boards to Square Feet = 75: 30 Boards to Square Feet = 2.5: 1,000 Boards to Square Feet = 83.3333 If you had a board that was 4" wide you would need 3 of them to get 1 foot wide. Finally, multiply the total number of board feet by the price of each board foot to get the total cost. Simply defined, a board foot is a 1 ft piece of lumber that’s 1-inch thick. Let’s calculate the board feet per piece and in total: BF/Piece = 2 x 4 x 8 / 12 = 5.33 board feet per piece, Total BF = 12 (2 x 4 x8) / 12 = 64 board feet for 12 pieces. To calculate the thickness of the spray foam, it will depend upon the R-Value that the owner has decided on. ft.}$$, If you know the cost per board foot, then multiply the result by this number to get the total cost for the 10 boards. BF = w t L / 12 (1) where . Currency (optional) Rough lumber measurements in width and thickness are employed when determining board feet, even in situations in which the lumber has already been sanded down. If the thickness and width differ, but they have the same length, then whatever the length of the board is, they will have the same number of board feet for the two sizes. Let’s calculate the board feet per piece and in total: BF/Piece = 2 x 4 x 8 / 12 = 5.33 board feet per piece Total BF = 12 (2 x 4 x8) / 12 = 64 board feet for 12 pieces. If you have more than one board, then multiply the total number of board feet in a single board by the number of boards: $$\text{Total board feet = board feet in single board × number of boards}$$. For this example, suppose that you need 10 boards that are 2.5 feet long, 4.5 inches wide, and 2 inches thick. Once total board feet has been assessed, it is easy to find the cost: $$\text{Total cost = price per board foot × total board feet}$$. Enter the actual board width, not the nominal value of the board. Here are some steps to follow for board foot and cost computations. In this case, you will need $100 (before tax) to pay for the required boards. 8/4 has a thickness of 2.00 inches and so on…. While both are measurements, the former is for volume, and the latter is for area. Most merchants use the board foot measurement, especially when you buy several pieces of lumber in different sizes. Calculate the number of board feet in one of the boards:$$\text{Board feet in one board} = {2.5 × 4.5 × 2 \over 12} = \text{1.875 bd. Aside from being a thermal insulator with a higher performance, this spray foam type can also add structural stability to the roof, walls and any other areas where you will apply the spray foam. In contrast to a square foot, which is an area, a board foot is a volume. Make the calculations and see the changes. w = nominal lumber width (in) One board foot of lumber is one square foot that is one inch thick.Board foot is a volume measurement used for lumber, where. Let's say the cost of the board is $10 per bf. For instance, you need 12 pieces of boards which measure 2″ x 4″ x 8′. Most people engaged in woodwork know what a board foot is, but it may sound new to others. You can convert this value to inches using the following formula: 1 board foot = 1 (12) x 1(12) x 12 = 144 inches3. You should also take into account those parts of the house which will have insulation. As we have previously discussed, this involves a calculation of wood volume. Decide on how much lumber you need. for use in every day domestic and commercial use! If your lumber was 6' long you would need 18 feet board feet for each foot of width. It turns out that the answer is simpler than you think! For open-cell spray foam, the R-Value is around 3.6/inch. How does the board foot calculator compute board footage in general? This is why a 1"x 4" board is actually 3/4" thick and a 2"x 4" board is actually 1-1/2" thick. This type can attain an increased thermal performance with a lesser thickness. A board foot is a common unit of measurement for hardwood lumber. Let’s say the price of each board foot is $4.15. After computing, you can use the board foot calculator to check for correctness. If you know the price of each board feet, enter the monetary value so the calculator can give you the Total Cost. Simply multiply the width of the board in inches by the length of the board in feet and divide the output by 12: Board Feet = Length (feet) × Width (inches) × Thickness (inches) / 12. We can input it into the formula as follows. Input the price of each board. In simple terms, a board foot is a measurement to determine the volume of hardwood lumber. The term board foot is used to describe a volume that is equal to a one-inch thick square foot. Then the total number of board feet is given by dividing the volume of the board by 12: $$\text{Board feet in single board} = {\text{volume of board (ft. in}^2) \over 12} $$. This online board foot calculator can help you determine the number of board feet you need. If you purchase good clear material add about 15% for waste, if you elect to use lower grade material you will have to allow for defects and more wasted material -add about 30%. When you visit a lumberyard shop, you may encounter the terms hardwood and softwood. Enter square feet. All these boards of similar sizes come in stacks in the lumberyard and have the same selling price.eval(ez_write_tag([[970,90],'calculators_io-banner-1','ezslot_7',105,'0','0'])); Hardwoods, on the other hand, sell by board foot. Let’s assume the cost for one board foot is $6.50.$$\text{Total cost = 6.50 × 18.75 = \$121.88}$$. For this example, let’s say you need 5 lumber pieces. Let's say we have a board that has the following dimensions: All you need to do is substitute the numbers into the board foot formula. The term board foot is used to describe a volume that is equal to a one-inch thick square foot. When computing for board feet, pay attention to the units. Ask for a dozen two by fours eight feet long at your local sawmill, and you’ll be told that what you really want is 64 board feet of lumber. This is a process where insulating foam gets mechanically sprayed on a surface to build up a layer of insulating material. After entering the measurements, the calculator will automatically generate the Board Feet value. Now multiply the result by the number of pieces to get the total number of board feet. United States Salary Tax Calculator 2020/21, United States (US) Tax Brackets Calculator, Statistics Calculator and Graph Generator, UK Employer National Insurance Calculator, DSCR (Debt Service Coverage Ratio) Calculator, Arithmetic & Geometric Sequences Calculator, Volume of a Rectanglular Prism Calculator, Geometric Average Return (GAR) Calculator, Scientific Notation Calculator & Converter, Probability and Odds Conversion Calculator, Estimated Time of Arrival (ETA) Calculator. ft.) you need for a project. When purchasing your lumber needs from a building supply store, you usually purchase these items per piece. ft.}$$ Multiply by the total number of boards (10) to get the total number of board feet:$$\text{Total board feet = 1.875 × 10 = 18.75 bd. Softwoods are a dimensional type of lumber, meaning they come in uniform sizes. Rough lumber measurements in width and thickness are employed when determining board feet, even in situations in which the lumber has already been sanded down. First, estimate the total volume of a given board using the formula for the volume of a rectangular solid. Board Feet Explained. Here are the steps for using this board feet calculator: eval(ez_write_tag([[300,250],'calculators_io-medrectangle-4','ezslot_4',103,'0','0']));eval(ez_write_tag([[300,250],'calculators_io-medrectangle-4','ezslot_5',103,'0','1']));eval(ez_write_tag([[300,250],'calculators_io-medrectangle-4','ezslot_6',103,'0','2'])); Don’t confuse a board foot with a square foot. 1 board foot = 144 in 3 = 1⁄12 ft 3 = 2360 cm 3 = 2.360 liters = 0.002360 m 3; Board feet can be calculated as.