Cubic Feet Calculator

* * = Cubic Feet
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Enter dimensions to calculate cubic feet automatically

This is a free online tool to calculate the volume of a cuboid or a box, support metric and imperial units (inches, feet, yards, mm, cm or meter), simple CFT calculator with calculation formula and dynamic visual cube help us understand the answer more easily.

How to use this CFT calculator

  1. Fill the numbers into blanks of lenght, width and height
  2. Accept input decimals or fraction, eg. 1.4, 5.5, 1 7/8 or 3/8
  3. Choose the unit of measure you are using (in, ft, yd, mm, cm, m)
  4. Then you will know how many cubic feet(cf³) is it

How to calculate cubic feet ?

CFT is also known as cubic feet or ft3, a unit measurement of volume, a cubic foot is the space occupied by a cube with 1 foot width, length and height. Here is how to figure out the cubic feet, if your unit of measurement is not feet, convert the nuit to feet first, then, multiply length, width and height values together, this will give you the volume of the cube.

For example :
How to calculate the volume(cf3) of a carton that dimension is 13 x 20 1⁄4 x 12 1⁄2 inches ?
Convert from measurements in inches to cubic feet, when we measure the dimension of a carton with a ruler, the unit is inches, and we need calculate the cubic feet.

  • 13 in = 13 ÷ 12 = 1.083 ft
  • 20 1⁄4 in = 20.25 ÷ 12 = 1.688 ft
  • 12 1⁄2 in = 12.5 ÷ 12 = 1.042 ft
  • 1.083 × 1.688 × 1.042 = 1.9048844 ft³

Unit conversion formula

Cubic feet formula for different units

If you don't want to convert the unit to feet first, that's ok, below are formulas for other units.

Here are more volume calculators and converters used in different situations, these online calculation tools are free and easy to use, welcome to share or try it.

Volume calculators

Volume converters

What do you think about this CFT calculator ?


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Use of the calculators within this website is free. Whilst every effort has been made to ensure the accuracy of the calculators published within this website, you choose to use them and rely on any results at your own risk. We will not under any circumstances accept responsibility or liability for any losses that may arise from a decision that you may make as aresult of using these calculators. Similarly, we will not be requesting a share of any profits you may make as a result of using the calculators.