Packaging Review

How to Identify Inefficient Packaging

6 min read 30 Oct 2026 WSUK Team
The quick answer

Inefficient packaging shows up as five measurable things: a low fill ratio, a long box ladder with duplicate rungs, a high component count at the bench, packs sitting just over a carrier band, and a protection standard that is uniform across a varied range. All five can be identified from your own data in an afternoon.

Efficiency means the pack does its job with the least everything

An efficient pack uses the least material, the least bench time and the least chargeable volume that still gets the product there intact. Inefficiency is any of those being larger than the product requires.

That definition is useful because it is measurable. You do not need an expert opinion to find most of it - you need a tape measure, a stopwatch and your own order data.

Test one: fill ratio

Product volume divided by carton internal volume, for the formats carrying most of your orders. Below about two thirds and you are paying to ship, fill and buy space the product does not use.

Allow for genuine protection - a fragile item needs space around it. What it does not need is unstructured space that gets filled at the bench.

Test two: ladder length against range

List every pack format you hold and the annual order volume through each. Two patterns indicate inefficiency: rungs that carry almost nothing, and rungs whose dimensions are within a couple of centimetres of each other.

What you findWhat it costsAction
A size carrying under 2% of ordersStock, space, and a decision per orderRemove it and absorb into the nearest rung
Two sizes within 2cm of each otherDuplicate stock, packer confusionConsolidate to one
Most orders in the largest sizeVolumetric cost on most despatchesAdd or re-specify a mid rung
Every order in one sizeEither excellent, or a lot of airCheck the fill ratio before concluding

Reading your box ladder.

Test three: component count at the bench

Watch a packer build one order and count how many separate materials they touch. Carton, tape, fill, label, insert, leaflet. Then count how many decisions they make - which size, how much fill, which protection.

Both counts are costs. Pack time is mostly reaching, cutting and deciding rather than sealing, so each extra component and each extra decision is seconds multiplied by every order. packaging for fulfilment covers how to reduce both.

Test four: band fit

Measure your packs as shipped against your carriers' published size and weight thresholds. Anything sitting just over a threshold is paying a step change on every order for the sake of a few millimetres.

This is the most consistently overlooked test, because nothing visibly goes wrong - see postal and parcel packaging.

Test five: protection uniformity

If the same protective standard is applied to your most robust and your most fragile lines, it is wrong for both. Over-specified for one, inadequate for the other, and you pay twice - once in unnecessary material and once in damage.

Group SKUs by weight, fragility, finish and journey, and specify per group. See protective packaging and packaging materials.

Turning the five tests into a plan

  1. Run all five. They take an afternoon between them.
  2. Rank what you find by order volume affected, not by how annoying it is.
  3. Fix the ladder first - it touches everything and costs nothing to change.
  4. Re-specify the highest-volume format.
  5. Re-measure, including damage, before moving to the next.

If you would rather not run them yourself, they are the opening stage of a packaging review.

The short version

  • Five tests: fill ratio, ladder length, component count, band fit, protection uniformity.
  • All five can be run from your own data in an afternoon.
  • Rank what you find by order volume affected.
  • Fix the ladder first because it changes nothing about the product.
  • Finding nothing wrong is a legitimate and useful result.

Frequently asked questions

What fill ratio should we aim for?

There is no universal target - it depends on how much protection the product genuinely needs. Use it as a screening tool: anything below about 50% deserves a look.

How many box sizes is the right number?

Fewer than most businesses hold, chosen deliberately. Each extra size buys a slightly better fit and costs bench space, stock and a decision per order.

Is a high component count always bad?

Not if each component is doing a job the product needs. It is bad when components accumulate because nobody removed the previous solution when a new one was added.

Can we do these tests without stopping production?

Yes. Four are desk exercises on data you already have, and the bench observation takes twenty minutes during a normal shift.

What if the tests show our packaging is fine?

Then you have that in writing and can stop worrying about it. That is a legitimate and useful outcome.

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Want this looked at properly?

Tell us what you pack and what it costs you now. A packaging review sets the findings out in writing - and we will not quote you a saving before we have looked.