Measure a Box Dimension is not rocket science. For simple packaging, most brands don’t focus on exact box dimensions like length, width, and height they just want a wrap that fits. But when it comes to creating custom-printed packaging boxes, paying heed to their dimensions is quite crucial.
Custom boxes are more than a packaging solution; they are an affirmation of the product’s safe shipment and elegant display. Therefore, you can’t take the box measurement light. Attention to detail can lead you to more sales shortly.
Take, for instance, the example of a room. A perfect room is one where people can sit, stand, sleep, and move comfortably. Hence, the best box is the one that has enough space to aptly accommodate the product. It must be large and spacious enough that the product can find a snug fit.
Remember, inappropriate packaging boxes are more likely to damage the product while shipping. The reason is that the delicate products do not fit in them and can move freely. Here is a step-by-step guide that will help you measure the box dimensions correctly:
Understanding How Measure a Box Dimensions: Length, Width, and Height Explained
These are special values that refer to the box measurements, typically mentioned in the order of length, width, and height. Length is the longest side of the box, width is the shorter side of the box, and height is the vertical dimension from the base to the top of the box. Remember to measure these dimensions from the inside of the box rather than the outside.

Depth is another term that is used interchangeably for height. Whatever the term you are using, the industry standard of measurement always remains the same, i.e., L*W*H or L*W*D. As different boxes have different shapes and sizes, it is crucial to understand some of the following facts before starting to measure the box:
Difference Between Length And Width
- A tall or upward-facing box will be deeper with a smaller width and length.
- A small box with a short height will be shallower and can have more length or width in different cases.
Gather Essential Tools for Measuring a Box Dimension
Though measuring box size is straightforward, it has some protocols as well. You can’t measure the box length, width, and height without essential tools. Some of these tools are shared here:
- A measuring tape
- A ruler
- A notepad
- Pen
How to Measure the Length of a Box Correctly
To measure a box dimension, begin with the length, which is the longest side. Use a ruler or measuring tape and keep it straight along the edge. Make sure it’s not bent to avoid errors. Write down the result to maintain accuracy for custom packaging.
How to Measure the Width of the Box?
The next step is to measure the shorter side of the box. You will do it the same way as you measured the box length. Again, make sure that the tape is straight and aligned with the edge of the box. Once done measuring, record the results by noting them down on the pad.
How to Measure the Height of the Box?
At the end, measure the box height by placing the tape from the base to the top. Make sure to measure the height from inside the box to affirm the proper fitting of your product.
Find out the Volume of the Box

After you measure a box dimension, its length, width, and height, it’s important to calculate the volume. Volume helps with material use, cost savings, and packaging design. Use the formula L × W × H = Volume to get accurate results for your custom packaging needs.
L*W*H=V
Though it is best to learn these formulas and basic mathematics rules, you can also have a calculator to make precise readings and avoid mistakes.
Don’t Ignore the Box Style for Accurate Measurement
Remember that different boxes by style have additional requirements for their accurate measurement. Some major box styles are shared below, which need immense attention while measuring:
- Regular Slotted Container (RSC) with flaps that are attached in the center of the box.
- The full overlap container with flaps fully overlaps with each other.
- Half-Slotted Container (HSC), resembling RSC but has an open top.
As each box style varies from others in shape and functionality, it is highly suggested to focus on their special features while making a final measurement.
What are the Drawbacks of Preferring the Box Exterior for Accurate Measurement?

As it is mentioned earlier, the box interior should be preferred for measurement. The following are the reasons why the box exterior is not used for this purpose:
- Exterior measurements do not account for the thickness of the box by materials, making the internal dimensions smaller than expected.
- Relying on exterior dimensions for custom packaging can lead to ill-fitting packaging, which may be harmful to the product during shipping.
- Exterior measurements can lead to the overestimation of the package size, resulting in higher shipping costs.
What are the Major Considerations while Measuring the Box Dimensions?
Consider the following points while measuring the box dimensions:
- For a product’s snug fitting, make sure to measure the length, width, and height of the inside of the box. Though this fits best for all items, it is compulsory for fragile products.
- While designing a custom boxes, don’t forget to consider the material thickness. For example, the width of corrugated boxes , cardboard boxes can affect the internal measurements. Ensure to cut the material thickness from external measurements for accurate results.
- Cross-check your measurements to ensure accuracy. It is better to measure twice rather than end up with a box that doesn’t fit your product.
- Use online tools, especially digital calculators, for complex box designs.
- In case, if you need a custom design or are unsure about the measurements, consult with a packaging expert for valuable insights.
- Create a prototype before finalizing the box design with specific dimensions. This will help you make necessary changes if needed.
Contact Unique Custom Packaging Now!
As you get to know how to measure a box dimensions of your custom-printed packaging box, apply these steps practically. Reach out to Unique Custom Packaging Company for an expert opinion regarding your box size and shape. Visit our website and share your query, also get our free quote for wholesale purchasing of your dream custom packaging boxes.