If you’re passionate about craft beer, you’ve likely encountered the term “growler.” Whether you’re ordering one at your favorite brewery or seeing it on taproom menus, the growler is a beloved vessel for carrying fresh, draft-quality beer home. But what exactly is a growler, and—most importantly—how many cans is a growler equivalent to? Whether you’re sharing with friends, planning a party, or simply want to understand beer packaging better, this comprehensive guide breaks down growler sizes, compares them to standard beer cans, and explores everything you need to know about this iconic container.
What Is a Growler?
A growler is a refillable container traditionally used to transport draft beer from breweries, brewpubs, or taprooms directly to consumers. Initially made of glass and holding 64 fluid ounces (1.89 liters), the modern growler has expanded in size, material, and functionality. It’s designed to preserve carbonation and freshness for several days, offering a better-tasting alternative to pre-packaged cans or bottles after short-term storage.
The Origin of the Name “Growler”
The term “growler” dates back to the late 19th century. One popular theory suggests that workers would bring beer home from taverns in tin pails. As the beer sloshed around during the walk, the carbon dioxide escaping created a “growling” sound—hence, the name growler. Another theory points to slang used by customers who would “growl” for more beer. While the exact origin remains debated, the name stuck and evolved into a symbol of craft beer culture.
Standard Growler Sizes: What You Need to Know
Although the traditional growler is 64 ounces, several variations exist today due to consumer demand, packaging advancements, and brewery preferences.
1. The Classic 64-Ounce Growler
The most common growler size is 64 fluid ounces (1.89 liters), which is equivalent to exactly four 16-ounce pints. This size has become the industry benchmark for draft beer takeout. It’s typically made of amber glass to protect the beer from UV light, which can cause skunking and spoil flavor.
Volume Equivalent in Beer Cans
Let’s answer the main question upfront: how many cans is a 64-ounce growler? Since a standard beer can holds 12 fluid ounces, you can perform a simple calculation:
| Container Type | Volume (Fluid Ounces) | How Many to Fill a 64 oz Growler? |
|---|---|---|
| Standard Beer Can | 12 oz | 5.33 cans |
| 16 oz Can (Pounder) | 16 oz | 4 cans |
| 12 oz Bottle | 12 oz | 5.33 bottles |
So, a 64-ounce growler holds the equivalent of about 5 and one-third standard 12-ounce beer cans. While that might seem like an odd number, it’s close enough to round up to six cans for practical considerations, especially if serving or sharing.
2. The Half-Growler (32-Ounce)
Also known as a “howler,” the half-growler holds 32 ounces (approximately 0.95 liters). It’s ideal for individuals or those who want a smaller volume of fresh draft beer.
- Volume: 32 oz
- Equivalent to ~2.67 standard 12-oz cans
- Holds two 16-oz pint cans
This size is gaining popularity due to its portability and reduced risk of waste, since it’s easier to consume before the beer degrades.
3. The 32-Ounce Crowler
A variation of the half-growler is the crowler—a portmanteau of “can” and “growler.” It’s a 32-ounce aluminum can sealed at the brewery. Unlike traditional glass growlers, crowlers are lightweight, shatter-resistant, and offer superior protection from light and oxygen.
While functionally similar to a half-growler, the crowler is increasingly preferred because:
- It maintains beer freshness longer
- It prevents leaks and is more travel-friendly
- Breweries can fill and seal them on-site with modern equipment
4. The 128-Ounce Growler (Gallon / 4-Liter)
Some breweries offer a 128-ounce (3.79-liter) growler, essentially a full gallon. This behemoth is perfect for large gatherings or serious beer enthusiasts.
| Growler Size | Fluid Ounces | Standard 12-oz Cans Equivalent | Pint Glasses (16 oz) |
|---|---|---|---|
| Half-Growler / Howler | 32 oz | 2.67 cans | 2 |
| Standard 64-Oz Growler | 64 oz | 5.33 cans | 4 |
| 128-Oz Gallon Growler | 128 oz | 10.67 cans | 8 |
So, the large 128-ounce growler holds just under 11 standard beer cans—a massive quantity ideal for parties or keg-like sharing.
Comparing Growlers to Beer Cans: Size, Function, and Taste
While we’ve established growler volume in terms of beer cans, it’s essential to compare these containers beyond just size. Let’s explore how growlers stack up against canned beer in terms of freshness, flavor, environmental impact, and convenience.
1. Freshness and Shelf Life
Properly sealed and refrigerated, a glass growler can preserve beer freshness for up to 3–5 days. However, once opened, the beer should be consumed within 24 hours, as exposure to oxygen degrades flavor and carbonation rapidly.
In contrast, a crowler or sealed aluminum can can preserve beer for up to 2–3 weeks due to superior oxygen barrier and light protection. Canned beer generally has a longer shelf life, both before and after opening, but growlers filled fresh from the tap offer an unmatched flavor profile immediately after dispensing.
2. Taste and Aroma Preservation
Glass growlers are excellent for preserving flavor, provided the cap is tightly sealed and the growler is stored cold and upright. However, micro-oxidation over time can produce off-flavors, especially in hop-forward beers like IPAs.
Modern innovations such as nitro-sealed growlers, ceramic-coated growlers, and stainless steel vacuum-insulated growlers (e.g., GrowlerWerks uKeg) vastly improve freshness retention. These premium growlers can keep beer carbonated and cold for weeks—far outperforming regular cans in maintaining draft-like quality.
3. Environmental and Economic Impact
One of the most significant advantages of growlers is their reusability. Unlike disposable cans, a growler can be refilled dozens, even hundreds, of times. This reduces packaging waste and, over time, saves money.
Consider this:
- Buying a 64-oz growler refill is often cheaper per ounce than buying four 16-oz cans
- You reduce aluminum or glass waste by reusing instead of discarding
- Many breweries offer discounts for returning clean growlers
From both an eco-friendly and economic standpoint, the growler wins long-term for regular craft beer drinkers.
Carbon Footprint Comparison
Studies show that refillable containers like growlers (when reused) generate 73% less carbon emissions than single-use aluminum cans. While cans are recyclable, the recycling process consumes energy and resources. Reusing a growler multiple times minimizes this impact significantly.
Different Types of Growlers: Material and Use Case
Not all growlers are created equal. The material of the growler affects weight, durability, insulation, and effectiveness at preserving beer.
1. Glass Growlers
The traditional glass growler—typically amber-brown—is still the most common. Advantages include:
- Low cost
- Clarity (you can see the beer)
- Easy to clean
But drawbacks include:
- Fragility—can break if dropped
- Bulkiness and weight (a full 64-oz growler weighs ~5 pounds)
- Poor insulation—doesn’t keep beer cold long
2. Stainless Steel Growlers (Insulated)
These are rapidly gaining popularity. Made from double-walled, vacuum-insulated stainless steel, models like the Hydro Flask Growler or GrowlerWerks can keep beer cold for up to 24 hours.
Benefits:
- Excellent temperature retention
- Durable and shatter-proof
- Often includes handles or spouts for easier pouring
- Superior seal technology (e.g., CO₂ cartridge systems)
Trade-offs:
- More expensive (ranging from $60–$120)
- Opaque—can’t see beer volume or color
- Weight can still be high, depending on size
3. Ceramic and Plastic Growlers
Less common, but some breweries offer ceramic growlers, which look great as collectibles but are fragile. Plastic growlers (usually HDPE) are lightweight and safe but risk absorbing odors and degrading over time. These are not widely recommended for serious beer preservation.
How to Maximize Your Growler Experience
To get the most out of your growler—whether you’re comparing it to cans or enjoying it solo—follow these best practices.
1. Ask for Freshly Filled Growlers
Always confirm that your growler is being filled from a freshly tapped keg. Some breweries may use older beer for takeout, which reduces quality. A freshly poured growler should have a solid head of foam (which protects from oxidation) and be cold.
2. Minimize Air Exposure
After filling, leave as little headspace as possible. More air means faster oxidation. Some experts recommend filling the growler until beer pours out of the neck (then securely capping it), to displace oxygen.
3. Store It Properly
Always store your growler:
- Upright in the refrigerator
- In a dark place (especially for glass growlers)
- Sealed tightly
Avoid shaking or agitating it before opening.
4. Consume Within the Ideal Window
For best flavor:
- Drink within 2–3 days for regular glass growlers
- Drink within 5–7 days for insulated or vacuum-sealed growlers
- Drink within 1–2 days for hoppy styles like IPAs
- Lagers, stouts, and sours often last longer
5. Clean It Right Away
Never let beer sit in a dirty growler. Residual liquid can create bacteria and biofilm. Wash with hot water and a long-handled brush immediately after emptying. Avoid soap unless necessary—residue can linger and affect taste. For deeper cleaning, use a vinegar-baking soda solution monthly.
Why Choose a Growler Over Cans?
While canned beer is convenient and widely available, growlers offer a premium experience that’s hard to match.
1. Fresher Beer, Direct from the Tap
Most growlers are filled on-demand from active kegs, often tapped earlier that day. This means you’re getting beer that hasn’t sat on a shelf or been exposed to transportation-related temperature changes—something cans can’t guarantee unless bought straight from a brewery.
2. Access to Limited-Release or Tap-Exclusive Brews
Many breweries only serve their newest, rarest, or test batches on draft. A growler lets you take that unique experience home. You might never find that hazy double IPA or barrel-aged stout in a can—but you can get it in a growler.
3. Supporting Local Breweries
Buying growlers typically means supporting local, independent breweries directly. These businesses often rely on taproom sales to thrive. Your growler purchase helps fund their operations, staff, and innovation.
4. Better Value Per Ounce
On average, a 64-oz growler costs $14–$22, while four 16-oz cans of the same beer would cost $20–$28. That’s an immediate savings of 20–30% per ounce. Factor in growler cleaning and reuse, and the long-term savings are substantial.
When to Use Cans Instead
Despite the many advantages of growlers, there are cases where cans make more sense.
1. For Long-Term Storage
If you won’t drink the beer immediately, canned beer has better shelf stability. A sealed can can maintain quality for months, whereas a growler should be consumed within days.
2. For Travel or Outdoor Events
Cans are lighter, more compact, and unbreakable. For hiking, camping, or beach outings, cans are often safer and more convenient than glass growlers.
3. For Limited Refrigerator Space
A full 64-oz growler takes up significant fridge space. Cans are easier to store and organize, especially if you’re buying variety packs.
Conclusion: How many cans is a growler, really?
To answer the core question once and for all: a standard 64-ounce growler holds the equivalent of 5.33 standard 12-ounce beer cans. That’s roughly five and a third cans of beer, or four full 16-ounce pint cans. The half-growler (32 oz) equals just under three standard cans, while the gallon-sized growler contains nearly 11 standard cans’ worth of beer.
But beyond the math, the growler is more than just a container—it represents a tradition of enjoying fresh, local craft beer in its purest form. Whether you’re choosing glass, stainless steel, or a crowler, the growler offers superior taste, sustainability, and connection to the brewery community.
Next time you visit a taproom, consider skipping the six-pack and going for a growler instead. You’ll likely get fresher beer, better value, and a more authentic craft beer experience—whether you’re pouring it into pint glasses or savoring it straight from the jug. Embrace the growl.
What is a growler and how many cans of beer does it hold?
A growler is a glass or stainless steel container typically used to transport draft beer from breweries or taprooms. The most common growler size is 64 ounces, which is equivalent to a half-gallon. This amount translates to exactly four standard 16-ounce pints or roughly five and one-third standard 12-ounce cans of beer. The term “growler” originated in the late 1800s when people would carry beer from saloons in tin pails, and the carbonation would create a rumbling sound, giving rise to the name.
Comparing growler capacity to standard cans helps consumers understand the volume they’re purchasing. Because a 64-ounce growler holds about 5.33 standard 12-ounce cans, it’s an economical and eco-friendly option for enjoying fresh draft beer at home. Some breweries also offer smaller growler sizes, but the 64-ounce version remains the industry standard. It’s important to note that while growlers provide more beer than a six-pack, they must be consumed relatively quickly after opening to preserve freshness and carbonation.
Are there different sizes of growlers, and how do they compare to cans?
Yes, growlers come in various sizes beyond the standard 64-ounce model. Common alternatives include the 32-ounce “howler” (also called a half-growler), the 128-ounce “double growler” or “growler +,” and even 1-liter (approximately 33.8 ounces) versions popular in some regions. Each of these can be converted into equivalent can counts: a 32-ounce growler holds about 2.67 standard 12-ounce cans, while the 128-ounce size holds roughly 10.67 cans, making it ideal for sharing or extended consumption.
These size variations cater to different needs, such as individual enjoyment, sampling multiple beers, or group gatherings. The 32-ounce option is great for trying a new beer without committing to a full growler, while larger sizes offer better value per ounce. However, all growler sizes share the same challenge: once opened, the beer begins to lose carbonation and flavor, so proper storage and prompt consumption are key. When comparing to cans, growlers offer more volume but less portability and shelf stability.
Why do breweries use growlers instead of cans?
Breweries often use growlers because they allow customers to take fresh draft beer home directly from the tap, preserving flavor and quality that might degrade over time in pre-packaged containers. Since growlers are filled on demand, they minimize exposure to oxygen and light, two factors that can spoil beer. Additionally, growlers serve as marketing tools—they’re reusable, often branded, and encourage repeat visits to refill, strengthening customer loyalty. This direct-to-consumer approach supports craft breweries by reducing packaging costs and waste.
While cans are convenient and portable, growlers offer a unique experience for beer enthusiasts seeking the closest thing to a taproom pour. Canned beer requires industrial canning lines, which can be expensive for smaller breweries, whereas growlers only need a filling station. Moreover, some beer styles, like hoppy IPAs or unfiltered ales, are best consumed fresh and benefit from the immediacy of growler fills. Although cans provide longer shelf life, growlers deliver superior short-term quality and a personal connection between brewery and consumer.
How long does beer last in a growler compared to canned beer?
Beer in an unopened, properly sealed growler can stay fresh for up to 7 to 10 days when stored in a cool, dark place like a refrigerator. However, once opened, the beer should be consumed within 24 to 36 hours because exposure to air rapidly degrades carbonation and flavor. The quality decline is faster than in cans due to the larger headspace and less consistent seal in some growler types, especially older glass models with wire bails and rubber gaskets.
In contrast, canned beer typically maintains its freshness for several weeks to months, depending on the style and storage conditions. Modern cans provide an airtight, light-proof seal that protects against oxidation and UV damage—common causes of beer spoilage. While canned beer has a significant advantage in shelf life, the tradeoff is that it doesn’t match the immediate freshness of a just-filled growler. For maximum enjoyment, beer from a growler should be consumed quickly, ideally within a couple of days of filling.
Can you carbonate flat beer in a growler like you can with cans?
No, you cannot artificially re-carbonate flat beer in a growler once it has lost its fizz. Unlike the canning process, which involves pressurized carbon dioxide during packaging, growlers are simply filled and capped. If the seal is imperfect or the beer sits too long, CO2 escapes, and the beer becomes flat. There are no consumer-friendly methods to safely re-pressurize a growler at home to restore carbonation, unlike kegs which can be connected to CO2 tanks.
Canned beer, once carbonated at the brewery, maintains its carbonation due to the hermetic seal until opened. While homebrewers may use forced carbonation techniques with kegs, growlers are not designed for this process. The best way to preserve carbonation in a growler is to fill it properly using a counter-pressure filler, seal it tightly, keep it cold, and consume it within a few days. Attempting to re-carbonate a growler with dry ice or pump devices can be dangerous and is not recommended.
Are growlers more environmentally friendly than cans?
Growlers can be more environmentally friendly than cans when used repeatedly, as they are designed to be refilled multiple times. A single 64-ounce glass growler can replace dozens of 12-ounce aluminum cans over its lifespan, reducing waste and the energy required for manufacturing and recycling. Many breweries incentivize reuse by offering discounted refills, further enhancing their eco-friendly appeal. Stainless steel growlers are especially durable and recyclable, making them a sustainable choice in the long run.
However, the environmental benefit depends heavily on consumer behavior. If a growler is used only once or infrequently, its production footprint outweighs the benefits. Cans, while single-use, are highly recyclable and lightweight, reducing transportation emissions. Aluminum also has high recycling rates and can be reprocessed efficiently. Ultimately, a growler’s sustainability hinges on regular reuse; otherwise, the convenience and recyclability of cans may make them a greener option per use.
What’s the difference between a growler and a crowler, and how do they compare to cans?
A growler is a reusable container, usually made of glass or stainless steel, filled with draft beer at breweries or bars. In contrast, a crowler is a hybrid container: a 32-ounce aluminum can filled and sealed on-site, similar to how bottles or cans are packaged at breweries. The key advantage of a crowler is its hermetic seal, which typically preserves beer freshness longer than a standard growler, especially after opening. Both are designed to take draft beer to-go, but they differ significantly in materials and performance.
When comparing volume, a crowler holds 32 ounces, equivalent to about 2.67 standard 12-ounce cans, while the traditional 64-ounce growler holds nearly twice as much. Crowlers offer better shelf life and portability than glass growlers, with a more reliable airtight seal, making them closer in performance to traditional canned beer. However, growlers win in reusability and long-term cost savings. Crowlers are ideal for single-use, short-term storage, while growlers serve repeat customers who value sustainability and larger quantities.