Most of the business focuses on the product and forgets about the box dimension, which is as important as the product itself. They realize this when their customer receives a product in an extra-small or extra-large box. This mistake wastes money and can harm your reputation. It also increases the risk of damaging your products.
The right size is an important choice for your products and business. Here are all the details you need to know about the custom box sizes.
What Is a Custom Box Size?
A custom box size lets you choose the exact dimensions of your packaging. You do not have to use standard sizes that do not fit your items. Instead, you provide the specific length, width, and height your product requires. This option is available for e-commerce boxes, mailers, custom retail boxes, and cheap shipping boxes.
Risks of Improper Box Sizes
A box that does not fit your product causes three main problems:
- Higher Costs: Shipping companies charge based on box size, not just weight. If a box is too large, you pay to ship space.
- Wasted Material: Large boxes need extra paper or foam to keep items still. This adds expense without any benefit to your client.
- Damage: A fitted box can crush your item. A loose box lets the product move and break during transit.
How to Measure Sizes for a Custom Box
To measure custom shipping boxes wholesale, use this order: Length × Width × Height. These numbers must represent the inside space of the box. Do not measure the outside surface. This ensures your product fits perfectly within the cardboard.
Follow these definitions to find the right custom-sized shipping boxes:
- Length: Measure the longest side of the box opening.
- Width: Measure the shorter side of the box opening.
- Height: Measure the distance from the bottom of the box to the top.
The Space Rule
Do not use the exact size of your product for the box dimensions. Always add 1 to 2 centimeters to each measurement. This extra room provides space for protective items like tissue paper, foam, or bubble wrap.
For example, if your product measures 20 cm × 15 cm × 10 cm, your box should measure about 21–22 cm × 16–17 cm × 11–12 cm.
Internal vs. External Dimensions
Internal measurements show what fits inside your custom packaging boxes. External measurements show how much space the box takes up in a truck or a warehouse. These outside dimensions determine your shipping costs.
The gap between these two sizes depends on how thick the cardboard is. For instance, a B-flute board adds about 3 mm to each wall. An E-flute board adds about 1.5 mm. These small numbers matter because shipping companies use these totals to set their prices.
Standard Box Sizes for Your Products
Every order can be unique, but many businesses start with these common sizes for their items:
| Box Size (Inches) | Suggested Use |
| 6 x 6 x 6 | Jewelry, cosmetics, and small electronics |
| 10 x 7 x 4 | Books, documents, and flat accessories |
| 12 x 9 x 6 | Clothing, toys, and medium gifts |
| 14 x 14 x 6 | Subscription kits and promotional sets |
These measurements are only a guide. Your specific product might require a different size. We can create standard boxes sized for shipping that fit your needs exactly.
Box Styles and How Size Affects Each One
The size of your item determines which box structure is best for your needs.
Mailer Boxes
These boxes are ideal for small, high-quality items. They lock on their own and do not need tape. They look professional when a customer first opens the package. For the best strength, choose a size under 15 x 15 inches.
Standard Shipping Boxes
These are the most affordable choices for heavy or large items. They have simple flaps and come in many custom sizes. You can make these as large as you need. However, very large boxes are better when they have double layers for extra support.
Retail Boxes
These are thin, light boxes that are shipped to you flat. They work well to show products on a store shelf. These boxes are not strong enough to mail on their own, but they are perfect for small retail items.
A smaller box is not always the cheapest option, but a box that fits your product perfectly will almost always lower your total costs.
Even a small change, like a half-inch reduction, custom printed boxes, can put your shipping box sizes into a cheaper price category with major shippers. Over thousands of orders, these small changes lead to significant savings for your company.
Information for Your Custom Box Order
Please have these details ready before you request a price or start an order:
- Exact Size: The length, width, and height of your product plus any extra space you need.
- Item Weight: This helps us choose the correct material strength for your box.
- Style: The specific shape, such as a mailer, a standard shipping box, or a folding carton.
- Amount: The total number of boxes you need. Larger orders often reduce the price for each unit.
- Design Files: A digital file that shows where to place your images and where the box folds.
- Purpose: Tell us if you will use the box for store shelves, home delivery, or storage.
The Right Fit for Your Business
A box that fits your specific product is not just for large companies. Any business that ships items can benefit from a box with the right dimensions. These boxes protect your goods and help you pay less for shipping.
If you have the measurements of your product, you are ready to begin.
When you start an order with us, please give us the internal dimensions of your product. If you lack some of this information, the team at TheProductBoxes can help you with each step. Our team calculates the extra space for the material thickness for you.
Ask for a price at TheProductBoxes today, and we will handle the rest of the process for you.
