How Many Shipping Box Sizes Does a Small Business Really Need

The Smartest Retailers Don’t Buy Every Box Size. They Focus on the Right Few. Most companies assume packaging efficiency comes from having more shipping box sizes. The logic sounds reasonable: more sizes should mean better product fit, less empty space, and lower shipping costs.

But large eCommerce, retail, and CPG companies often prove the opposite. The best operators do not treat box buying as an endless customization exercise. They standardize around a focused set of high-volume box sizes, optimize those sizes with data, and only add complexity when shipment data proves the need.

That distinction matters. More box sizes can reduce void space, but they also add purchasing complexity, inventory cost, warehouse clutter, slower pack-line decisions, and more room for human error. Fewer box sizes create leverage: better unit economics, faster fulfillment, simpler training, cleaner operations, and more consistent branding.

The lesson from companies like Target, Amazon, Walmart, and P&G is not that every business should use the same three boxes. The lesson is sharper: most businesses should start with a small core set of boxes, then expand only where the data justifies it.

Target found that three box models handled 70% of shipments

The clearest public example comes from Target.
According to Fast Company, Target’s creative team reviewed the company’s corrugated shipping box designs and found that even though Target used boxes in many shapes and sizes, just three box models accounted for 70% of all shipments. That insight changed the opportunity. Target did not need to redesign every box to create a meaningful impact. By focusing on the three highest-volume box models, the company could improve the customer delivery experience across the majority of its shipments. (Fast Company)
That is the key operational insight: volume is rarely evenly distributed across every possible box size.
For many eCommerce companies, a small number of box dimensions carry a disproportionate share of orders. Those become the “hero sizes.” They are the sizes worth optimizing first, branding first, sourcing first, and tracking most carefully.
For a smaller brand, this can mean starting with three to five custom shipping boxes instead of trying to predict every possible packaging scenario. The right few box sizes can cover most orders while keeping purchasing, storage, and fulfillment simple.
The tradeoff is that a tighter box suite may not perfectly fit every order. Some shipments will still need void fill or a backup box. But that tradeoff may be worth it if the core sizes cover most order volume and reduce complexity across the business.

Amazon uses optimized box suites, not infinite box choices

Amazon operates at a scale most businesses will never approach, but its packaging strategy still reinforces the same principle.
Amazon Science describes the theoretical ideal as a box perfectly tailored to every order. But the company also notes that this would require a “near-infinite range of box sizes,” which is not practical in real fulfillment environments. Instead, Amazon uses optimized suites of box options based on the order patterns of specific fulfillment centers, regions, and marketplaces. (Amazon Science)
Amazon’s PackOpt tool evaluates the best mix of box sizes for a given facility. By the end of 2022, Amazon expected about 90% of boxes shipped by Amazon to come from an optimized box suite. In North America, Amazon said PackOpt reduced cardboard waste by 7% to 10% annually, saving roughly 60,000 tons of cardboard per year. (Amazon Science)
That is not a “few sizes only” strategy. Amazon’s SKU complexity requires more sophistication than that. But it is still a constrained box-suite strategy. Amazon is not solving packaging with unlimited options. It is solving packaging with data-driven standardization.
That matters for small and midsize eCommerce companies because most do not need Amazon-level optimization. They need the simpler version:

Identify the order profiles that drive most shipment volume
Choose a small number of custom boxes with logo that cover those profiles
Track exceptions
Add sizes only when dimensional weight, damage rates, labor friction, or customer experience justify the expansion

Walmart is pushing right-sized automation, but the lesson is still box discipline

Walmart’s current strategy appears to lean more toward on-demand right-sizing than fixed standard box sizes.
Walmart partnered with Packsize on the Ultra5, an on-demand box machine built exclusively for Walmart. Packsize says the system can produce up to 600 boxes per hour, reduce waste from oversized boxes, eliminate some void fill, and help retailers fit up to 33% more boxes on freight and delivery carriers. (packsize.com)
At Walmart’s scale, this makes sense. When a retailer ships enormous volume across a wide assortment, automated right-sizing can reduce waste and improve parcel economics.
But this does not mean every eCommerce business should chase box-on-demand automation. Most small and midsize businesses do not have the shipment volume, capital budget, warehouse layout, or technical operations to justify that kind of system.
The practical takeaway is more grounded: Walmart is attacking the same problem, but with enterprise automation. Smaller companies can attack it with a focused box suite.
A business shipping hundreds or thousands of orders per month may get most of the benefit by standardizing around a few logo shipping boxes, improving pack rules, and avoiding large mismatches that trigger unnecessary dimensional weight costs.

P&G and Tide show the CPG version: design the package to ship

CPG companies face a different challenge. They often ship products that were originally designed for retail shelves, not parcel networks.
P&G’s Tide Eco-Box is a useful example. Packaging World reported that the Tide Eco-Box was designed specifically for eCommerce and could arrive at the customer’s doorstep without a traditional outer shipping box. The product package itself became the shipping-ready format. (Packaging World)
Amazon’s packaging coverage also described the Eco-Box as a product that ships in its own container, reducing the need for secondary packaging. (Packaging (US))
This is not the same as reducing a box catalog to three sizes. It is a different version of the same principle: reduce packaging complexity by designing around the real shipping use case.
For CPG brands, the answer may be ship-in-own-container packaging. For eCommerce merchants, the answer may be a focused set of custom boxes with logo for shipping. In both cases, the company is refusing to treat packaging as an afterthought.

The hidden cost of too many box sizes

Adding more box sizes feels like precision. In practice, it can create operational drag.
Every additional box size creates more decisions:

Which size should the packer choose
Where should the box be stored
How much inventory should be carried
When should it be reordered
Which products or bundles belong in it
How often does it actually save money versus create complexity
That complexity compounds. A warehouse with too many box sizes may look more optimized on paper but perform worse in practice. Packers slow down. Inventory gets messy. Purchasing volumes fragment. Some sizes sit unused. Others stock out. The “perfect fit” becomes an operational distraction.
A tighter box suite does the opposite. It gives the team default choices.
For many merchants, the best starting point is not a catalog of 20 custom boxes. It is a short list of proven shipping boxes with logo that cover the highest-volume order patterns.

The better model: start narrow, expand with evidence

The smartest approach is not “few sizes forever.” It is “few sizes first.”
A strong packaging strategy should work in stages:

Stage 1: Analyze order patterns: Look at the most common products, bundles, and shipment dimensions
Stage 2: Choose core sizes: Pick three to five custom shipping boxes that cover the highest-volume shipments
Stage 3: Brand the boxes: Use custom boxes with logo where volume justifies the cost and customer experience benefit
Stage 4: Track exceptions: Watch for high void fill, damage, dimensional weight penalties, or frequent packer workarounds
Stage 5: Add only proven sizes: Expand the box suite when the data shows a recurring problem, not because a rare shipment might need a perfect fit

This mirrors the logic seen at Target and Amazon. Target found that a few box models drove most shipments. Amazon uses optimized box suites instead of unlimited box options. Walmart uses automation to solve fit and waste at massive scale. P&G redesigned the product package itself for eCommerce.
Different companies. Same strategic direction: reduce packaging waste without creating uncontrolled operational complexity.

Why this matters more now

Shipping costs are no longer driven only by package weight. Carriers increasingly price around dimensional weight, zone, surcharges, and handling rules. That makes box selection more important than it used to be.
The wrong box can quietly increase cost in several ways:

Higher dimensional weight
More void fill
More damage risk
More storage space
Slower pack time
Worse customer experience
More packaging waste
But the answer is not always more sizes. The answer is better size discipline.
A merchant using blank boxes may be buying whatever is available, not what is optimal. A merchant using custom boxes may be overcomplicating the assortment before understanding shipment patterns. The opportunity sits between those extremes: a focused set of custom boxes that are easy to buy, easy to store, easy to pack, and good enough for most shipments.

What smaller eCommerce companies should learn from Target and Amazon

Large retailers have the data, volume, and incentives to optimize packaging aggressively. Smaller companies can use the same logic without the same infrastructure.
The practical lesson is simple:
Do not start by asking, “How many box sizes could we need?”
Start by asking, “Which few box sizes cover most of what we actually ship?”
That shift changes the buying decision.
Instead of buying boxes reactively, merchants can build a core box strategy:

One small box for compact, lightweight orders
One medium box for the most common product mix
One large box for higher-volume or bundled orders
Optional specialty sizes only when order data proves the need

For many eCommerce businesses, that is enough to move from messy, generic packaging to a more professional branded experience. A focused box suite can make custom shipping boxes more affordable, reduce operational friction, and give customers a more consistent unboxing experience.

The strategic takeaway

The best packaging systems are not the most complex. They are the most disciplined.
Target’s finding that three box models represented 70% of shipments is powerful because it shows how concentrated shipping volume can be. Amazon’s PackOpt work shows that even the world’s largest eCommerce operator relies on optimized box suites rather than infinite choices. Walmart’s automation shows the enterprise version of the same goal: reduce wasted space and improve logistics. P&G’s Tide Eco-Box shows that sometimes the best shipping box is no separate shipping box at all.
For most growing eCommerce companies, the winning move is clear:
Start with the right few custom boxes, not every possible size.
Then let shipment data decide what comes next.

FAQs

1. Why do large retailers use fewer shipping box sizes?

Large retailers focus on fewer high-volume shipping box sizes because it simplifies purchasing, inventory management, warehouse operations, and pack-line training. A focused box suite can also improve unit economics because companies buy higher quantities of fewer sizes.

2. Did Target really find that only a few box sizes handled most shipments?

Yes. Target found that three corrugated box models accounted for 70% of its shipments. That insight allowed the company to focus design and packaging improvements on the boxes that affected the majority of customer deliveries.

3. Does using fewer box sizes increase shipping costs?

It can if the boxes are poorly chosen. A box that is too large can increase dimensional weight, require more void fill, and create a worse customer experience. The goal is not simply to use fewer boxes. The goal is to use the right few boxes based on real order data.

4. How many shipping box sizes should an eCommerce business start with?

Many eCommerce businesses should start with three to five core shipping box sizes. Those sizes should be based on the company’s most common products, bundles, and shipment profiles. Additional sizes should be added only when recurring order patterns justify them.

5. What is a “hero size” in packaging?

A hero size is a high-volume box size that handles a large share of shipments. These are the sizes worth optimizing first because improvements to hero sizes affect more orders, more customers, and more packaging spend.

6. How does Amazon approach shipping box sizes?

Amazon uses optimized box suites rather than unlimited box choices. Its packaging systems evaluate which box sizes make the most sense for specific fulfillment centers, regions, and order profiles. This helps reduce cardboard waste while keeping fulfillment practical.

7. Is box-on-demand better than standard box sizes?

Box-on-demand can be powerful at enterprise scale, especially for companies like Walmart with massive shipment volume and automation budgets. For most small and midsize eCommerce companies, a focused set of standard custom shipping boxes is usually more practical and cost-effective.

8. What is the downside of having too many shipping box sizes?

Too many box sizes can create operational drag. Packers have more decisions to make, inventory is harder to manage, purchasing volumes get fragmented, and some sizes may sit unused while others stock out. More choice does not always mean better efficiency.

9. Should custom boxes with logo be used for every shipment?

Not necessarily. Businesses should prioritize custom boxes with logo for the sizes used most often. Branding the highest-volume shipping boxes creates the biggest customer experience impact without overinvesting in low-volume or exception sizes.

10. How can a business choose the right custom shipping boxes?

Start by reviewing recent shipment data. Identify the most common products, bundles, and order sizes. Then choose a small set of custom shipping boxes that cover the majority of those shipments. Track exceptions over time and add new sizes only when the savings or operational benefits justify the complexity.

11. Do fewer box sizes help with sustainability?

They can. Fewer, better-chosen box sizes can reduce excess material, simplify inventory, improve cube utilization, and reduce unnecessary void fill. However, the sustainability benefit depends on choosing sizes that fit real shipment patterns.

12. What is the main lesson from Target, Amazon, Walmart, and P&G?

The main lesson is that packaging efficiency comes from discipline. Target focused on the few box models that handled most shipments. Amazon uses optimized box suites. Walmart invests in right-sizing automation. P&G redesigned some product packaging to ship without an extra box. Each approach reduces waste and complexity by designing packaging around actual shipping behavior.