How Big is a Quart Size Bag: Comprehensive Guide with Examples for Travel

Last updated on January 24, 2024

Navigating the confusing world of travel requirements just got easier, because today we’re going to delve into everything you need to know about a quart size bag, from dimensions to usage within the realm of various travel regulations.

Embarking on a journey often involves meticulous packing, and understanding the capacity of a quart size bag is crucial for anyone aiming to breeze through airport security with liquids.

Equating to 32 ounces or roughly 946 milliliters, quart size bags, commonly measuring 7 by 8 inches, are the unsung heroes of travel, ensuring your carry-on essentials meet TSA standards while keeping your belongings neatly organized.

Whether you’re a seasoned traveler or planning your first trip, recognizing the practicality of these bags and their substitutes, like clear plastic or reusable silicone options, can transform your travel prep into a smooth and hassle-free experience.

Let’s dive into the details of how these quart-sized companions cater to your travel needs, offering examples and smart packing insights along the way.

Key takeaways:

  • A quart size bag holds 32 ounces or approximately 946 milliliters.
  • It is primarily used for holding liquids, gels, and aerosols in travel carry-ons.
  • The dimensions of a quart size bag are typically 7 inches by 8 inches.
  • Quart size bags serve multiple purposes including efficient packing and TSA compliance.
  • Alternatives to quart size bags include clear plastic storage bags and reusable silicone bags.

What's Inside

What Is a Quart Size Bag?

what is a quart size bag

A quart size bag is a pre-measured container commonly used to adhere to travel regulations, such as those enforced by the Transportation Security Administration (TSA). Specifically, this bag has a capacity of one quart, which is equivalent to 32 ounces or approximately 946 milliliters.

Its primary use is for holding liquids, gels, and aerosols in travel carry-ons, where each item within the bag must not exceed 3.4 ounces (100 milliliters). Transparent, sealable, and typically plastic, this container simplifies security checks at airports, ensuring passengers comply with carry-on liquid rules.

Its compact size and clear material help travelers quickly identify and access their personal care items when needed.

Dimensions of a Quart-Sized Bag

dimensions of a quart sized bag

A quart-size bag typically measures 7 inches by 8 inches, although the flexible nature of plastic bags means there can be slight variances. This size equates to a volume of 32 fluid ounces, or 946 milliliters – enough to hold a small collection of travel necessities or a modest amount of household items.

To visualize its capacity, consider that a quart-size bag could comfortably fit two standard brick-sized cream cheese packages side by side. It’s worth noting that when the bag is sealed, it should still maintain the quart dimension, so packing should account for the ability to close the bag fully.

Purpose of a Quart Size Bag

The quintessential use of quart-sized bags lies in bringing order and saving space. Whether for travel, storage, or organization, these handy bags serve multiple purposes:

  • Efficient Packing: They make the most of limited baggage space, ensuring travelers can pack essentials neatly and visibly.
  • TSA Compliance: For air travel, these bags adhere to security regulations, accommodating travel-sized liquids and gels in a transparent, resealable bag for quick screening.
  • Food Storage: In the kitchen, they are the go-to for portioning snacks, preserving leftovers, or even marinating foods, thanks to their leak-proof nature.
  • Crafts and Small Items: Beyond food and travel, they help keep small craft items, hardware, or office supplies in a discernible, contained manner, making them easy to find and use.

Their versatility extends their purpose beyond singular use, fitting seamlessly into daily routines and specialized tasks, simplifying the art of compartmentalization.

The TSA Approved Quart Size Bag Dimensions

Navigating airport security is smoother when you’re familiar with the TSA’s guidelines for liquids. Encased in a clear, resealable plastic bag, each passenger is allowed a single quart-sized bag. These bags measure 7 inches by 8 inches or a combined area of 56 square inches. To ensure compliance, typical freezer bags found in grocery stores often fit these dimensions, simplifying your packing process.

Keep in mind, the restriction isn’t just about size; it’s also about volume. Each container within the bag should hold no more than 3.4 ounces (100 milliliters). Balancing the container sizes with the quart bag dimensions maximizes your carry-on liquid allowance. This organized approach helps TSA agents quickly assess your belongings, contributing to a more efficient screening experience for everyone.

What Items Are Allowed in My TSA Approved Quart Size Bag?

Navigating airport security can be smoother when you know what’s permitted in your TSA-approved quart-size bag. Under the 3-1-1 liquids rule, each container should contain no more than 3.4 ounces (100 milliliters) of liquid. Pack items like these to comply:

  • Shampoo and conditioner
  • Body wash and lotions
  • Toothpaste and mouthwash
  • Sunscreen and insect repellent
  • Liquid makeup products such as foundation or mascara
  • Hair gel and hair spray
  • Creamy cosmetics like concealer or moisturizer

Remember to seal these containers in the clear bag to easily display them during security checks. Solid items like bar soaps or powders do not need to be in the quart-size bag, providing more space for your liquid essentials.

How to Pack a Quart Size Bag

Maximizing space while ensuring accessibility is key when packing your quart size bag. Start with travel-sized containers, which are typically 3.4 ounces (100 milliliters) or less.

Arrange these bottles or tubes flat on the bottom for a stable base. Above this layer, place solids such as solid deodorants or makeup.

Seal the bag by pressing out excess air, which helps to compress items and provides a clear view when navigating security checkpoints. Remember, the bag should close comfortably—don’t force it shut. If it bulges or doesn’t seal, security may require you to remove items.

Keep frequently used items near the top for easy access. If traveling with someone, consider sharing the load to distribute liquids and gels evenly between bags.

Advantages of Using a Quart Size Bag

Quart size bags offer a blend of convenience and compliance, particularly for air travelers. They make security checks faster because Transportation Security Administration (TSA) officials can quickly scan the clear plastic, leading to shorter wait times. Their standardized size simplifies packing by setting a limit on how much liquid you can carry, thus encouraging efficient packing habits.

These bags are reusable, cost-effective, and a go-to for leak prevention, shielding the rest of your luggage from potential spills. They’re not only for travelers; organize your everyday items such as office supplies or snacks. By using these bags, you’re not just adhering to regulations but also opting for a practical solution to carry and protect your essentials.

Alternatives to a Quart Size Bag

When a quart size bag isn’t the most practical option, several alternatives can get the job done. For bulkier items or longer trips, consider using clear plastic storage bags with a slider closure, as they offer more space and are often easier to seal. Reusable silicone travel bags present an eco-friendly choice; they are durable, leak-proof, and come in various sizes. For smaller or less liquid content, snack-size zip-top bags are a compact solution.

For non-liquid items, compression bags can save space and keep clothes organized, while dedicated packing cubes offer a tailored approach to sorting various types of travel essentials. Remember that while these alternatives may work for general packing, they may not meet the Transportation Security Administration (TSA) regulations for carry-on liquids. Always check the latest guidelines for the most suitable and compliant options.

Traveling With a Quart Size Bag: Dos and Don’ts

Traveling with a quart size bag streamlines your journey, ensuring your carry-on essentials comply with security guidelines. Here are some practical tips:


  • Check airline regulations: Confirm your airline’s restrictions on liquids to avoid last-minute repacking at the security checkpoint.
  • Use clear, resealable bags: A transparent bag allows security officers to quickly examine the contents without needing to open it.
  • Organize your items: Place similar items together for easy access. Use travel-sized containers for liquids, each no larger than 3.4 ounces (100 milliliters).
  • Prioritize essential items: Pack only what you need during the flight—medications, sanitizers, and basic cosmetics.
  • Prepare for inspection: Have your quart size bag ready to place in the bin as you approach the security line to speed up the process.


  • Overpack: Avoid forcing items into the bag. It should close comfortably without bulging.
  • Include prohibited items: Familiarize yourself with the no-fly list to prevent confiscation of belongings.
  • Neglect to refresh knowledge: Security measures evolve; stay informed about current TSA requirements before each trip.
  • Dismiss bag maintenance: Keep the quart size bag clean and intact to ensure a hassle-free experience. Replace it when it shows signs of wear.

Remember, the quart size bag is a security measure designed to make everyone’s journey safer. Following these guidelines ensures a more pleasant travel experience.

Difference Between a Quart Size Bag & a Sandwich Bag

Understanding the distinction between quart size bags and sandwich bags is crucial, especially when preparing for air travel or food storage. Both types of bags are frequently made from similar materials; however, there are key differences:

  • Size Specifications: A quart size bag typically measures 7 inches by 8 inches, holding about 32 ounces, or 1 quart of content. On the other hand, a sandwich bag usually measures around 6.5 inches by 5.875 inches and is designed to hold a standard sandwich.
  • Usage Scenarios: Quart size bags are often used for travel, especially to conform to TSA liquid regulations. Sandwich bags, being smaller, are best suited for packing individual snacks or sandwiches.
  • Capacity: The quart size bag’s larger allowance fits travel-sized bottles up to 3.4 ounces each. In contrast, a sandwich bag is tailored to snugly fit a single sandwich rather than multiple small items.

Remember, when packing liquids in carry-on luggage, ensuring you use a TSA-approved quart size bag for a smooth security checkpoint experience is a must. Keep these differences in mind, and you’ll be set for both travel and daily lunch prep.


What is considered a quart-size bag?

A quart-size bag refers to a clear plastic bag with approximate dimensions of 7" x 8", ideal for holding items that need to be easily inspected, such as those for TSA checks.

What size is a TSA approved liquid bag?

The size of a TSA approved liquid bag is exactly 7 x 5.5 x 1.5 inches.

How big is a quart-size storage bag?

A quart-size storage bag typically measures 7 inches by 8 inches.

Can I use a gallon Ziploc bag at the airport?

Yes, you can use a gallon Ziploc bag at the airport, but for the TSA carry-on regulations, all your liquids, gels, and aerosols must not exceed 3.4 ounces each, and all must fit into a single, clear, quart-size bag.

How does a quart-size bag compare to other common bag sizes?

A quart-size bag, typically used for travel regulations, is smaller than a gallon-size bag, which is commonly used for storage purposes, and is also larger than sandwich-size bags, which are often used for food storage.

What are the typical dimensions and usage of a one-quart bag?

A one-quart bag typically measures 7 inches by 8 inches (17.7 cm by 20.3 cm) and is commonly used for storing food, organizing small items, and meeting airline carry-on liquid restrictions.

Is there variation in quart-size bag dimensions by different manufacturers?

Yes, there is variation in quart-size bag dimensions by different manufacturers.

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