Home »

# Height, Width, Depth, Length

What is the proper way to use these common every day measurement terms?

There doesnâ€™t seem to be definitive consensus on the matter of the proper way to use the terms height (H), width (W), depth (D), and length (L) when describing the dimensions of things. Usually we are left to sort out which dimension each term is describing on a per object basis. This is stupid.

## A Real World Problem

I need cases for my studio monitors. Touring is not very friendly to delicate reference speakers, so proper cases are kind of important. Since the manufacturer of these particular monitors does not make cases, I had to look to other manufacturers for appropriately sized cases. In the specifications for the monitors the manufacturer lists their product in H x W X D dimensions. Thatâ€™s fine, but one case manufacturer lists their product in H x L x W. Another manufacturer lists their cases in H x L x D. That makes immediate identification of a properly sized case a bit difficult. The fact that some manufacturers list their products in imperial measures while others use the metric system complicates things too, but Iâ€™ll save that for another day.

Isnâ€™t it funny that we donâ€™t have standardized language for something as common as measuring the size of things? To be clear, this isnâ€™t necessarily a science problem, but a linguistic problem. Science has created a variety of coordinate systems to make sure we send rockets in the right direction, but for every day use we donâ€™t have a standard system of common words. I love the English language, but it is rife with deficiencies. Donâ€™t get me started on the lack of a â€œgrammatically correctâ€ gender-neutral third person singular pronoun. Grammarians, if youâ€™re reading this, stop complaining about the misuse of â€œtheyâ€ and SOLVE THE PROBLEM.

Back to dimensions.

## A Plan of Action

In most cases, an objectâ€™s dimensions can be described using Cartesian, cylindrical, or spherical coordinate systems with words we already know and love. If an object is roughly boxâ€“shaped, orient the object so youâ€™re looking directly at itâ€™s forward-facing orientation and describe it as if youâ€™re looking at it from the â€œfront.â€ This means youâ€™ll have to determine which side is the front. Most things have one. If your object doesnâ€™t, then itâ€™s probably not useful and should be recycled. (Kidding.) For example, studio monitors are useful because their front side houses speakers which emit sound.

### H x W x D

Using Height, Width, and Depth (in that order), make your measurements. Roughly 3 out of 4 objects in this world can be described this way.

• Width = X-axis (left to right) derived from wide
• Height* = Y-axis (bottom to top) derived from high
• Depth = Z-axis (front to back) derived from deep

### H x W x L

If an object is really long in one dimension but still boxy (e.g. lumber, french fries), use Length (L) instead of Depth. The word â€œlengthâ€ comes from the word â€œlong.â€

• Length = the long side of an object

### D/R/C x L

If an object is long but round instead of boxy (e.g. guitar cable, baseball bat, spaghetti), use Diameter (D), Radius (R), or Circumference (C) (usually in that order of preference) and Length. If itâ€™s something like a drinking glass or flag pole, use H x D/R/C.

• Diameter = the width of the widest distance across a circle
• Radius = distance from the center to the edge of a circle
• Circumference = the length of the edge of a circle if it was stretched out into a straight line

### The Ball Method

If an object doesnâ€™t have any boxy sides and is mostly round like a ball, use the Ball Method. Describe your object by choosing a ball thatâ€™s roughly the same size. Hail and cancer are the most common things to be measured this way, but itâ€™s used for all sorts of things. They are good because they are self-explanatory. Here are some of the most common sizes. Pick one.

• The tip of a ballpoint pen
• A pencil eraser
• No bigger than the tip of your pinky finger
• A golf ball
• A baseball
• A softball