13.11.2026
Quick Answer: To choose the right backpack size, consider what you need to carry, the bag’s capacity in litres and its physical dimensions. A 15–25 litre backpack suits many everyday needs, while larger capacities offer extra space for travel, sports equipment or longer outings.
Backpack Size Guide: How Many Litres Do You Need?
Backpack capacity indicates how much space a bag offers. Use these approximate ranges as a starting point:
| Capacity | Best For |
|---|---|
| 5–15 litres | Small essentials and short outings |
| 15–25 litres | Work, university and everyday use |
| 25–35 litres | Gym equipment and day trips |
| 35–50 litres | Travel and longer trips |
These ranges are general guidelines. Pocket layout and compartment design also influence usable space.
How to Check Backpack Dimensions and Fit
Capacity alone doesn’t guarantee a comfortable or practical backpack. Before buying, check these details:
- Dimensions: Compare the height, width and depth in centimetres with your needs.
- Laptop compartment: Check its internal dimensions against your laptop’s actual measurements.
- Shoulder straps: Adjustable straps help position the backpack comfortably against your back.
- Proportions: Choose a bag that doesn’t extend excessively below your waist or restrict movement.
Useful tip: Lay out everything you carry on a typical day before choosing a backpack. This helps you avoid buying an unnecessarily large bag.
For air travel, check your airline’s current baggage dimensions rather than relying on capacity alone.
Explore the Collection
Discover INREVEL’s women’s backpacks and men’s backpacks to find a design that complements your lifestyle. Compare individual dimensions, capacity and compartment layouts to choose a backpack that suits your daily routine.
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