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end{split} Volume[in] 3 ∴ Volume[ft] 3 ​ = 30 in × 36 in × 25 in = 27 , 000 in 3 = Volume[in] 3 /1 , 728 = 27 , 000 in 3 /1 , 728 = 15. But what do we do if the dimensions are expressed in units other than feet — like yards, inches, or even centimeters and meters?

If you are dealing with a different unit for each dimension, we recommend using the first method to avoid miscalculations. It may help you estimate the volume of a cuboid container, as well as the amount of material required to finish your desired earthworks — for example, calculating cubic feet of soil, sand, or gravel. How much water will fill up your aquarium or pool(although gallons are used more often than cubic feet in those cases). In the paragraphs below, you can read about how to calculate cubic feet from inches or from your favorite length unit.g. cubic feet of a cylinder calculator (or a cone, or a sphere), check out our volume calculator, which covers the most common three-dimensional solids. There are also situations where we want to cover a triangular, trapezoidal, circular, or circle sector area. One cubic foot is a volume that fills a 1 ft × 1 ft × 1 ft 1\ \text{ft} \times 1\ \text{ft} \times 1\ \text{ft} 1 ft × 1 ft × 1 ft cubic container. Calculating cubic feet" is a simplified way of saying that we need to find the volume of an object in cubic feet. After converting the units, you'll have all of the dimensions in feet, so a simple multiplication will give us the result in cubic feet.

And there we go, we've found the required volume of soil in cubic feet — 405 ft 3 405\ \text{ft}

If you're curious about how much space your suitcase takes up, so you'll know if it fits in your trunk. Volume[in] 3 = 30 in × 36 in × 25 in = 27 , 000 in 3 ∴ Volume[ft] 3 = Volume[in] 3 / 1 , 728 = 27 , 000 in 3 / 1 , 728 = 15. If you're wondering how much sand will fit into a rectangular sandbox or how much gravel your driveway needs.

In that case, you can try dividing the area into a couple of rectangles and calculating their areas separately before summing them up.