It's often difficult to know what size backpack is right for you, especially when buying online. Although the liter capacity guide gives a rough guide, how does it translate into real life? And, anyway, how big is 24 liters? To help, we've put together a backpack size guide that includes a packing list and pictures of the most popular sizes you should be able to fit into. There are 16-18 litre packs, 24-26 litre packs, 32-34 litre packs and over 40 litre packs.

Backpack Sizing Guide For You

What can you fit in a 16-18 liter backpack?

The slim backpack has a maximum capacity of 18 litres and is considered a compact size. If something is well made, can take advantage of its size and provide some functionality, it can hold a laptop, etc.The following is a packing list that you can load into a 16-18L backpack.

  • Keys
  • passport
  • Wallet
  • Sunglasses
  • Pen
  • Headphone
  • Cosmetics
  • Powerbank
  • Wire and cable
  • Pocket notebook
  • tablets
  • Book
  • Umbrella
  • Bottle

Maybe an 11 '-13' laptop (depending on size)

What would it be like in real life? Here's an example...

Backpack Sizing Guide For You

What can you fit in an 24-26 liter backpack?

24-26 liters is considered to be a medium backpack and is probably the most popular pack capacity there. Depending on the style, it's perfect for school or work, or as a great smart backpack for flying.This is a potential packing list for this size, depending on where you are going.

  • Up to 15’’ laptop 
  • Rolled-up jacket or sweater
  • Some snacks
  • A4 Notebook
  • A Magazine
  • Keys
  • Passport
  • Wallet
  • Sunglasses
  • Pen
  • Headphones
  • Make-up/Toiletries
  • Powerbank
  • Cords & Cables
  • Tablet
  • Book
  • Umbrella
  • Water bottle

 Backpack Sizing Guide For You

What can you fit in an 32-34 liter backpack? 

With more than 30 liters of water in your backpack, you are in a medium to large area. This means that if you're a light packager, you can happily take this stuff with you on a weekend away;If you need to bring a lot of things, it can be used as a daily bag. Another size suitable for air travel and no need to worry about carrying around. Below is a packing list that you can pack in 32-34 litre backpacks.

  • Up to 15’’ laptop 
  • A spare set of clothes
  • A pair of shoes
  • Make-up/Toiletries
  • Some snacks
  • A4 Notebook
  • A Magazine
  • Keys
  • Passport
  • Wallet
  • Sunglasses
  • Pen
  • Headphones
  • Powerbank
  • Cords & Cables
  • Tablet
  • Book
  • Umbrella
  • Water bottle

Backpack Sizing Guide For You

What can you fit in an 40+ liter backpack?

Now, we are firmly entering the wide space of the backpack. Depending on the size and the airline, anything with a mark of about 40-45 litres should still be carried with you. They make it easy for large travel backpacks that you don't want to check in. Even if you are a heavy packager, you should be able to take away 45 litres of packaging over the weekend. Light packers can easily use such bags for a week.With that in mind, here is a packing list that you can pack in more than 40 backpacks.

  • Up to 15’’ laptop 
  • 2-3 spares set of clothes
  • A spare pair of shoes
  • A warm jacket
  • A towel
  • Make-up/Toiletries
  • Headphones
  • Powerbank
  • Cords & Cables
  • Tablet
  • Some snacks
  • Notebook
  • A magazine or two
  • Maps
  • Keys
  • Passport
  • Wallet
  • Sunglasses
  • Pens
  • Book
  • Umbrella
  • Bottle

Backpack Sizing Guide For You

Hopefully, this guide will help you understand the appropriate items in a specific capacity backpack.Of course, everyone has different things, so by applying your essentials to items of similar size as described above, you should be well suited to your personal needs.

You can also enjoy this article for tips on how to pack more things into a bag when packaging.