What Size of Knack Pack Will My Laptop Fit In? | 13, 15 and 17 Inch Laptops

Wondering what Knack Pack fits your laptop? We've pulled together how to understand laptop measurements as well as how to determine if your laptop will fit into a laptop backpack's protective computer pocket or compartment. There is a also a handy list of which popular laptops fit into the three Knack Pack sizes.

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Every year, many people upgrade their laptop and tech setup.  And, with a new laptop comes the need for a new tech backpack to carry and protect it. 

Because of these new laptop purchases, the Knack Team gets a lot of inquiries on what is the right-sized Knack Pack for some of today’s popular new laptops. So, we put together this post on the Knack Pack size that may be right for you – based on your laptop’s size.

Quick Links: 

Great Laptop Backpacks for All Sizes
Understanding Laptop Measurements
The Importance of Form Factor
13 inch Laptop Backpacks
15 inch Laptop Backpacks
17 inch Laptop Backpacks
Laptop Backpack FAQs


Knack Packs: Great Laptop Backpacks for All Size Laptops

The Knack Team is 100% remote so we understand the need for a tech backpack with lots of compartments to carry your laptop as well as your other tech gear.  We designed each size Knack Pack with a separate, padded laptop pocket that zips closed to keep your laptop safe. Read on to understand how to know if your laptop will fit into the Knack Pack you are thinking about.

MORE >> The Best Backpack for Traveling with Tech

Best Backpack for a laptop



Understanding Laptop Measurements

First off, a word about laptop measurements.  In general, when a specific laptop claims to be “X inches”, or has a screen size of “X inches”, usually the measurement refers to the length of a diagonal line running from the outside edge of one corner of the screen to the outside edge of the opposite corner. Additionally, some laptop brands round this measurement up and some round it down so it becomes challenging to know if a laptop fits simply by using the manufacturers’ claimed size. Therefore, it's critical to understand the laptop's form factor when considering fit into a Knack's laptop pocket.

best laptop backpack


The Importance of Form Factor

It's important to know that the form factor (essentially a block representing the height, length, and depth of your laptop) that fits into your Knack's laptop pocket is determined by your Knack's laptop pocket zip opening and not the size of the laptop pocket's internal dimensions

Here's a generic example. Will a 15.6 inch laptop (i.e. a laptop that measures 15.6 inches from the outside corner of its screen to the opposite outside corner) fit in a laptop pocket with a 15 inch opening? Let's assume that this 15.6 inch laptop has a form factor of 13.75 inches in length, 9 inches in height, and .7 inches in depth. A 15.6 inch laptop with this form factor should fit into a laptop pocket with a 15 inch opening since its 13.75 inch length plus its .7 inch depth is less than the 15 inch pocket opening.

Getting back to Knack, we hand fit each Knack Pack with a form factor representing each laptop’s published H X L X D dimensions to ensure that our list is accurate. Please note that we compiled this list based on reports for the most popular laptops from Tech Radar and PC Magazine and updated this list in January 2023. If you have questions about your specific laptop, please email support@knackbags.com.

MORE >> Must Have Features in Your Tech Travel Backpack

Review of 15 inch laptop backpack


Small Knack Pack: Our 13 Inch Laptop Backpack

We start off our list with popular laptops that fit the laptop pocket in the Small Knack Pack. You can view all of the bag's details and specs here.

The Knack Small Laptop Backpack is designed to fit up to a “13 inch” laptop or tablet (measured diagonally).  Some laptops are a little bit over that measurement so we’ve marked those 13 inch laptops that will be a tight squeeze with a double asterisk (**). 

Here is a list of popular laptops that will fit in the Small Knack Laptop Backpack:

  • Acer Swift 3 13.5"
  • Acer Chromebook Spin 13.5"
  • ASUS ROG Flow 13.3"
  • ASUS Zenbook 13.3" 
  • Dell XPS 13 
  • Google Pixelbook Go **
  • HP Elite Dragonfly 13.3"
  • HP Envy x360 13.3"
  • HP Spectre x360 13.5
  • Lenovo Chromebook Flex 5i 13.3"  ** 
  • Macbook Air (13.3") 
  • Macbook Pro 13"
  • Microsoft Surface Laptop 3 13.5 **
  • Pixelbook Go 13.3" **
  • Samsung Galaxy Chromebook 13.3" 

The Small Knack Pack is a great tech backpack for professionals looking to pack light on a daily basis, but who still want room for a change of clothes in the bag's expandable luggage compartment. If you’re looking for a bit more room, consider the Medium Knack Pack (discussed below).


Review of 13 inch laptop backpack

Medium Knack Packs: Our 15 inch Laptop Backpacks

Next up are the popular Series 1 and Series 2 Medium Laptop Backpacks, perfect for the professional who carries a good amount of items with them every day, and has a “15 inch laptop”. 

Once again, since some laptops are a little bit over 15 inches, we’ve marked laptops that will be a tight squeeze with a double asterisk (**). 

Here is a list of popular laptops that will fit in Knack Medium Laptop Backpacks:

  • Acer Predator Triton (15.6") **
  • ASUS Vivobook 14" 
  • Asus Vivobook 15.6" **
  • ASUS ROG Zephyrus G15 **
  • Dell Inspiron 15 **
  • Dell Latitude 14"
  • Dell Latitude 15.6" **
  • Dell Vostro 16" **
  • Dell XPS 15 **
  • HP - Elitebook 14" 
  • HP-ENVY x 360 15.6"
  • Lenovo IdeaPad 1 14"
  • Lenovo ThinkPad 14"
  • MacBook Pro 15"
  • MacBook Pro 16" **
  • Microsoft Surface Laptop 5 15"
  • Samsung Galaxy 2 15.6"

We are often asked if the new MacBook Pro fits in Medium Knack Packs so we wrote an article specific for MacBook Pros to answer all your questions: Does a Knack Medium Laptop Backpack fit the 16" MacBook Pro?

"Better than I expected. Fits everything and more! Perfect fit for my new MacBook Pro 16” - Robert T. (Series 2 Medium)

Review of 15 inch laptop backpack


Medium Knack Packs are the go-to bag for commuting professionals who also want to pack gear for the gym or a 2-3 business trip. See how Knack Medium Laptop Backpacks are the best business backpacks for busy professionals. But if you’re looking for a bit more room, consider one of our Large Knack Packs (discussed below).



Large Knack Packs: Up to 17 Inch Laptop Backpacks

Last – but never least! – are our Knack Large Laptop Backpacks, designed to hold up to 17 inch laptops.  Unexpanded, these laptop backpacks holds up to 30 liters of gear, clothes and whatever else you must have with you every day.  When the expandable luggage compartment is expanded, it can hold up to 46 liters and 3 or more changes of clothes.

Below, we’ve shared what laptops will fit in the computer pocket of our Large Knack Laptop Backpacks:

  • Acer Predator 16"
  • ASUS Vivo Book 16"
  • Asus TUF Dash F15 15.6"
  • Dell XPS 17 (9720). 17"
  • Dell Inspiron 16"
  • Dell Vostro 16"
  • HP Victus 15.6"
  • HP Spectre 16"
  • Lenovo Legion 16"
  • Lenovo Legion S7 15.6"
  • LG 2023 Gram Ultralight 17"
  • MacBook Pro (16")

See all of the product specs for the Large Knack Pack tech backpack.

Review of 17 inch laptop backpack


Will a 17 inch laptop fit in a backpack?

A 17 inch laptop, with typical dimensions of around 15" long x 10" height x 1" deep will fit in a backpack with a 17 inch laptop pocket opening, but you should never try to squeeze a 17 inch laptop into a laptop pocket that is any smaller. This is because doing so can put unnecessary pressure on your laptop and can stretch out your bag. 

Knack Pack Hack: Tablet Sleeve in Main Compartment

Fun Fact: not all Knackpackers put their computer in the laptop compartment. Many choose instead to put it in the tablet sleeve in the main compartment. This is also a great solution for people who have to carry a work and personal laptop, needing two separate spots, or for people who love their Knack expandable backpack but find the computer pocket opening to be a bit small for their laptop.

Review of 15 inch laptop backpack

Why Knack is the Ultimate Companion for Tech

Want to do a bit more research on Knack Packs and the technology they can carry?  Check out our reviews page for testimonials and experiences from real Knack customers. Ready to shop now? Explore our collection of best-selling expandable Knack packs here.


Laptop Backpack FAQs:

Can you fit a 17-inch laptop in a 15-inch bag?

It's unlikely that a 17-inch laptop will fit in a 15-inch backpack. It's best to choose a backpack that is the appropriate size for your laptop to ensure a proper fit and protection during travel.

What are the differences between a 15-inch and a 17-inch laptop backpack?

The main difference is size, with a 17-inch backpack being larger and able to accommodate larger laptops. However, there may also be differences in padding, compartments, and other features designed specifically for each size.

What is the proper way to measure my laptop's size?

Measure your laptop diagonally from one corner of the screen to the opposite corner. This will give you the size of your laptop, such as 13 inches, 15 inches, or 17 inches.

Can a 15.6-inch laptop fit in a 15-inch backpack?

It's possible that a 15.6-inch laptop could fit in a 15-inch backpack, but it's best to check the dimensions of both to ensure a proper fit. Keep in mind that a backpack specifically designed for a 15.6-inch laptop may provide better protection and organization than a backpack meant for a smaller size.

How will you use your expandable backpack? We love to hear how you plan to use - or have used - your Knack Pack for work, travel, and everyday life. So share your stories and adventures with us on social media: tag @KnackBags and use the #KnackBags when you take your Knack on journeys.


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