Calculating the volume of a box is simple once you know the formula. All you need to do is follow the 4 steps below. A simple method is to use a 1 or 2 liter soft drink bottle and count the number of bottles of water needed to fill the enclosure.
All you need to do is follow the 4 steps below.
Width length and height. Dividing the volume in cubic centimeters of the shape by 1000 will give you the volume in liters L. The volume formula for a rectangular box is height x width x length as seen in the figure below. Be sure to use the same units like inches or centimeters for all 3 measurements.