Free Packaging Calculator

Packaging Calculator for Custom Sizes & Product Search

Not sure which box or bag fits?

  • Instant results, no sign-up
  • Works in cm, mm, or inches
  • Matches from our full in-stock range

We automatically check both orientations, so a sideways fit still counts.

How the packaging calculator works

1

Enter your width and length

Type in the two measurements you need to fit, in whichever unit is easiest — centimetres, millimetres, or inches.

2

Narrow it down by type

Filter to bags, boxes, or envelopes if you already know what you need, or leave it on "All" to see everything that fits.

3

See your closest matches ranked

Results are ordered by the tightest fit first, so the top result wastes the least space — with the exact size and a direct link to buy.

Why use a packaging calculator instead of guessing?

Avoid costly oversizing

Sizing up "just in case" wastes money and materials. Matching to the closest real fit keeps costs down without the risk of something not fitting.

Cut down on returns

Wrong-size orders are one of the most common reasons for returns and exchanges. A quick check up front prevents the back-and-forth entirely.

Save time comparing options

Instead of opening every product page and comparing dimensions by hand, get a ranked shortlist across bags, boxes, and envelopes in seconds.

Popular Packaging Essentials

Once you’ve found your perfect fit, stock up on the everyday essentials that keep your orders moving — from protective wrap and mailing bags to thermal labels and bubble envelopes, all ready to ship next day.

BEST SELLING

Bubble Envelopes

Price range: £8.51 through £17.06 ex. VAT

Thermal Label Rolls

£39.24 ex. VAT

BEST SELLING

Arofol Bubble Envelopes

Price range: £8.51 through £17.06 ex. VAT

BEST price

Small Bubble wrap

Price range: £3.86 through £20.49 ex. VAT

BEST SELLING

Grey Mailing Bags

Price range: £4.96 through £30.48 ex. VAT

FAQs

It matches your width and length against our full in-stock range and ranks results by tightest fit first, so the top match wastes the least space. We also check both orientations automatically, so a sideways fit still counts.
Just the width and length are enough. You can enter them in cm, mm, or inches — the calculator converts and matches everything for you.
The calculator shows your closest matches ranked from tightest fit to loosest, so you can always see the best available option even if there's no perfect size in stock.
Yes. Use the type filter to narrow results to bags, boxes, or envelopes, or leave it on "All" to see every match across our range.
Yes, it's completely free with no sign-up required — just enter your measurements and get instant results.
Checking dimensions on individual product pages takes time and is easy to get wrong. The calculator does that comparison for you in seconds and links straight to the product to buy.
  • Unit C, St. Huberts Mill, Cambridge Street
    Great Harwood, Blackburn
    Lancashire
    BB6 7BU

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