How to Measure a Backpack

Quick Answer: To measure a backpack, use a measuring tape to record its height from bottom to top, width across its widest point and depth from front to back. Measure in centimetres without compressing the bag. For laptops or specific belongings, check the internal compartment dimensions separately.

How to Measure Backpack Dimensions Step by Step

Place your backpack upright on a flat surface and gently fill it so it maintains its natural shape.

1. Height: Measure vertically from the bottom of the backpack to the highest point of its main body.
2. Width: Measure horizontally across the widest part of the bag.
3. Depth: Measure from the back panel to the furthest point of the front.
4. Record the results: Write the measurements as height × width × depth, for example, 42 × 30 × 15 cm.

Include protruding pockets, handles or other components when measuring the backpack’s overall external size for travel.

External Dimensions vs Internal Space

External measurements describe the backpack’s overall size, but padding, seams and compartments reduce the space available inside.

For a laptop backpack, measure your device’s height, width and thickness in centimetres. Compare these measurements with the internal laptop compartment, including its opening.

Useful tip: If you are measuring a backpack for air travel, pack it as you normally would before checking its dimensions. Soft backpacks can expand when filled. Compare the final measurements with your airline’s current baggage limits.

Remember that external dimensions alone cannot accurately determine a backpack’s usable capacity in litres.

Explore the Collection

Discover INREVEL’s women’s backpacks and men’s backpacks. Compare individual product dimensions and compartment details to find a backpack that accommodates your essentials and complements your everyday style.