length(feet) × width(feet) × height(feet) = cubic feet(cf³) length(inches) × width(inches) × height(inches) ÷ 1728 = cubic feet(cf³) length(yards) × width(yards) × height(yards) × 27 = cubic feet(cf³) 3 cubic feet =. How to Calculate Cubic Feet. Then, convert the dimensions to feet. 1 feet =. 1 feet. 1.4422 feet. Well, our cubic feet calculator has the option to change the volume from cubic feet to inches, yards, centimeters and meters. 2 cubic feet =. The calculator uses the following conversions to find the appropriate units: $$Volume\,in\,Cubic\,Yards\,(yd^3) = {Volume\,in\,Feet\,(ft^3) \over 27}$$ The first step to finding cubic feet is to measure the length, width, and height of a space or item. How to Calculate Cubic Footage using Dimensions in Feet Finally, apply the volume formula to solve cubic feet: volume = length × width × height. 2 feet =. 1 cubic feet. The cubic feet formula depends on the shape of the object for which one is calculating volume, but for a cube, v=a^3, where a is the length of one side in feet. 1.2599 feet. 8 cubic feet. For example, you may wish to calculate cubic feet from inches. Cubic Feet Formula Cubic feet = $$\text{Length (feet)} \times \text{Width (feet)} \times \text{Height (feet)}$$ If the shape is irregular, split it mentally into regular forms and measure the volume separately for each shape and add all of them to get the volume in cubic feet. For cylinders and prisms, the formula is the area of the base multiplied by the height.