What is an 8th of Weed?

An 8th of weed—short for one-eighth of an ounce—is one of the most common purchase sizes for cannabis consumers. It’s the standard amount in a single packaging of cannabis.

But users, especially those new to cannabis, often wonder how much weed is actually in an eighth, how long it will last them, and what they can do with it.

How Much Weed is in an 8th?

An 8th of weed weighs 3.5 grams, exactly one-eighth of an ounce (hence the name). That number might be easy enough to remember, but visualizing it can be trickier. Density and moisture content can make different strains look bigger or smaller than others.

Some buds are light, fluffy, and airy, taking up more space in the bag. Others are dense and compact, appearing smaller despite weighing the same. For reference, an 8th of weed weighs roughly the same as a couple of small grapes.

A guide to weed measurements and prices may provide a helpful breakdown of how an eighth compares to other common sizes. For those who prefer buying in bulk, an eighth is just a fraction of a full ounce—often called a zip.

How Big is an 8th Bag of Weed?

While an 8th of weed weighs 3.5 grams, its size can vary depending on the density and structure of the bud.

Some cannabis strains produce light, fluffy nugs that make an 8th of weed look like a full bag. Others are dense and compact, taking up much less space despite weighing the same. Because of these differences, an eighth can range from a few larger buds to a small handful of popcorn-sized nugs.

Most dispensaries package eighths in small mylar bags or glass jars. However, some may still use traditional plastic pop-top containers. If you’re new to buying cannabis flower, it's important to learn what to expect when shopping for different strains and packaging styles.

What Can You Do with an Eighth?

An 8th of weed might not seem like much, but it can go a long way, depending on how you consume it. Whether you prefer rolling joints, packing bowls, or making edibles, an eighth is enough for multiple sessions.

For reference, 3.5 grams can stretch into:

• Around three larger joints (1.2g each) or seven smaller ones (0.5g each).
• 2 to 3 blunts, since they require more flower than joints.
• About six bowls, depending on the size of your pipe or bong.
• A small batch of edibles, ideal for lower-dosage homemade treats.

How long an eighth lasts depends on your personal consumption. For a casual smoker, it could last a week or two, while a daily consumer might finish it in just a few days (or less!). If you're curious about how dosage affects your experience, a THC mg dosage chart may help you determine the right amount for your needs.

Roll 3 to 7 Joints

Joints are one of the most popular ways to enjoy an eighth. If you roll on the smaller side (0.5g per joint), you’ll get about seven joints, while larger 1.2g joints yield closer to 3.

Whether rolling for a solo session or passing one in a group, getting the perfect joint takes practice. There are step-by-step guides on how to roll a joint for helpful tips in perfecting your technique.

Load Up 2 to 3 Blunts

If joints are like a quick snack, blunts are a full meal. They take more weed than joints, with most blunts using 1 to 1.5 grams per roll. That means an eighth is typically enough for 2 to 3 well-packed blunts.

Blunts burn slower than joints, making them suitable for longer smoke sessions. If you want to master the art of rolling, a guide on rolling a blunt can walk you through each step.

Make Small Edible Batches

An eighth isn’t quite enough for making large edible batches, but it’s perfect for smaller, more manageable treats. With proper decarboxylation, you can turn 3.5 grams into infused butter, oil, or a handful of low-dose edibles.

There are beginner's guides that cover the essentials of cannabis cooking and a library of recipes for different types of edibles.

Pack Around 6 Bowls

Some consumers prefer taking quick, potent hits off a bowl. An 8th of weed is enough for about six fully packed bowls—though this can vary depending on your piece. Smaller pipes and one-hitters will stretch your stash further, while larger bongs will burn through it more quickly.

Knowing the best way to pack a bowl can enhance the experience for those who enjoy the ritual of smoking it.

How Much Does an Eighth Cost?

The cost of an eighth can vary widely depending on several factors. While prices have generally dropped over the years due to market expansion, some states still have higher costs than others.

On average, here’s what you can expect to pay for an 8th of weed in different states (before taxes):

• Arizona & Massachusetts – ~$20
• California & Nevada – ~$25
• Colorado & Michigan – ~$15
• Illinois & Maryland – ~$35
• Missouri – ~$30
• New York – ~$41
• Oregon – ~$13
• Washington – ~$17

Prices tend to be lowest in states with long-established cannabis markets, like Oregon and Colorado. Meanwhile, states with newer programs, such as New York and Maryland, often have higher costs due to supply and demand.

If you're looking for the best deal, shopping around is key. Many dispensaries offer daily deals, first-time patient discounts, and loyalty programs to help consumers save money. Following a guide on finding a dispensary near you may help you locate the most trusted shop in your area.

How Long Can an 8th Last You?

How long an 8th of weed lasts depends entirely on how often and how much you consume. For some, 3.5 grams is a week-long stash—for others, it’s gone in a day.

• Occasional consumers (1-2 times a week) – An eighth may last one to two weeks if used sparingly.
• Moderate consumers (a few times a week) – Expect it to last around 5 to 7 days.
• Daily consumers – If you’re rolling half-gram joints, an eighth could last about a week. Larger sessions or blunts? You might finish it in just a few days.
• Heavy consumers – Those with a high tolerance who smoke several times per day may burn through an 8th of weed in 1 to 3 days.

The way you consume also makes a difference. Smoking and vaping tend to use up flower faster, while small-dose edibles or one-hitter bowls can help stretch your stash further. Consider microdosing or switching up your consumption method to make an eighth last even longer.

The information in this article and any included images or charts are for educational purposes only. This information is neither a substitute for, nor does it replace, professional legal advice or medical advice, diagnosis, or treatment. If you have any concerns or questions about laws, regulations, or your health, you should always consult with an attorney, physician or other licensed professional.