How to Choose the Right Corrugated Box Size for Your Product

Why Box Size Matters More Than You Think

Choosing the wrong box size costs you twice. A box that is too large wastes cushioning material, shipping costs, and shelf space. A box that is too small risks crushing your product or forcing you to use extra tape and force that weakens the corrugated structure. Getting the size right protects your product and your bottom line.

Start With Your Product's Exact Dimensions

Measure your product's length, width, and height at its largest points, including any packaging inside the box such as poly bags or foam inserts. Add a small buffer, typically one to two inches per dimension, for cushioning material like packing paper or air pillows.

Understand Dimensional Weight

Many shipping carriers charge based on dimensional weight, not just actual weight. That means an oversized box, even if it is mostly empty, can cost more to ship than a properly sized one. Right sizing your boxes can lower your shipping spend significantly over a year of orders.

Common Box Size Mistakes to Avoid

• Using one box size for every product, regardless of fit

• Skipping cushioning because "the box is snug enough"

• Ignoring stacking strength when boxes will be palletized

• Not testing a sample shipment before ordering in bulk

When to Consider Custom Sizing

If your products come in unusual shapes, ship in high volume, or need extra protection for fragile items, custom corrugated boxes are often worth the investment. Custom sizing eliminates wasted space, reduces damage claims, and can make your unboxing experience look more professional.

Get a Box Size Recommendation

If you are not sure what size or strength of corrugated box fits your product, Allpacks can help. Share your product dimensions and shipping volume, and we will recommend options and provide pricing. Reach out through our Request a Quote form to get started.