Measure A Box - ULINE

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How do you measure a box?

To measure a box, you will need to use a ruler or measuring tape to measure the length, width and height of the box. Listed dimensions are always inside dimensions.

  1. The first dimension to measure is length. Length is always the longest side of the box that has a flap.
  2. The next dimension is width. The width side also has a flap, but is always the side shorter than the length.
  3. Measure the height of the package. Height is the only dimension without a flap. Measure the standing side of the box from top to bottom. The height measurement does not include flaps.

NOTE: Acceptable manufacturing variance is +/- 1/8".

Find the right box for you with the Uline Box Guide.

Search Uline Box Sizes by Cubic Inches
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Over 1,700 box sizes in stock!

Uline Standard Boxes

How A Box Is Measured
L x W x H
16 x 12 x 8"

Uline Long Boxes

How to measure long box
L x W x H
12 x 4 x 4"

Uline Tall Boxes

How to measure tall box
L x W x H
4 x 4 x 12"

A wide variety of Uline boxes always in stock

200 lb. Test Boxes

200 lb. Test Boxes

275 lb. Test Boxes

275 lb. Test Boxes

Long Boxes

Long Boxes

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Tall Boxes

Full-Overlap Boxes

Full-Overlap Boxes

Multi-Depth Boxes

Multi-Depth Boxes

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Tag » How To Measure A Box For Shipping