Cubic Feet Calculator

How to calculate cubic feet

Cubic feet is a unit of volume. To calculate the volume or capacity of an item or space in cubic feet you will first need to measure its length, width and height in either feet, inches (or a combo of both),centimeters, meters or yards. Once you have those measurements, you apply some multiplication as follows...

Calculating cubic feet for different units (formulae)

Let's look at each of these in turn.

Calculating cubic feet from measurements in feet

If you have measured the width, length and height of your item in feet then the calculation process is straight forward: Simply multiply the 3 figures together.

Cubic Feet Calculator

As an example, let's say you're looking for the capacity of a box thatmeasures 5ft by 3ft by 2ft. Multiplying those 3 figures together gives you a total cubic feet value of 30ft3.

Should you have already calculated your square footage, you simply need to multiply this figure by the height measurement.

If you're looking to measure a refrigerator, take a look at our article,how many cubic feet is my refrigerator?

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Calculating cubic feet from inches

If you have measured the dimensions of your item in inches then do the following:

As an example, let's say you're looking for the capacity of a box that measures 55" x 30" x 15". Multiplying those 3 figures together gives you a total cubic inches value of 24750in3. To convert that figure to cubic feet we divideit by 1728, giving a total of 14.323ft3.

Calculating cubic feet from centimeters

If you have measured the dimensions of your item in centimeters (cm) then do the following:

Calculating cubic feet from yards

If you have measured the dimensions of your item in yards then do the following:


Once you have your resulting figure, check it against the calculator at the top of this page. As an alternative, if you've taken your measurements and want toconvert them to cubic yards, give the cubic yards calculator a try.

You can learn more about how to calculate cubic feet in this article.

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How to convert from cubic inches to cubic feet

One cubic foot equals 1728 cubic inches. So, to convert from cubic inches to cubic feet you should divide your cubic inches figure by 1728. Should you not wish to do this manually, give my volume convertera try.