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Whether you’re just starting out with cannabis or are a seasoned connoisseur, you need to understand weed measurements. Not only will it give you the lingo you need, but you’ll also gain a greater understanding of quantity.

To buy marijuana, you’ll want to know exactly how much you want so you don’t end up with too much or too little. And once you take your weed home, you’ll need to know how much to roll into a joint or pack into a bowl. But understanding marijuana measurements can be a little tricky. That’s why we’re breaking them down into digestible bites in today’s post.

Common Weed Measurements

First, we’ll cover some of the most common ways that cannabis dispensaries and delivery services measure weed. Chances are, you’re probably familiar with these terms from science class. However, they take on a different significance when applied to cannabis.


The smallest increment of weed that dispensaries generally sell. You usually won’t find half-grams of flower, unless they’re already wrapped up in pre-rolls. Instead, sellers commonly offer half-grams of extracts, sometimes in vape cartridges. Half-grams are the perfect amount to roll up into a joint. You can usually pack between 2 and 4 bowls with a half gram, depending on the size of your pipe.


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Generally the smallest increment of flower that dispensaries and delivery services sell. By far, the most common grams on dispensary shelves are concentrates like wax, shatter, and more. You can probably pack between two and eight bowls with a gram. Or, twist one up into a blunt to share with friends!


If you bought personal flower in the old days, you’re probably familiar with eighths. This is one-eighth of an ounce. They’re easily the most commonly-purchased increment for marijuana bud. You’ll rarely see eighths of concentrates for sale, but this unit is still commonly used for flower. Unless you spark up fairly regularly, an eighth of flower should last you a week or more.

Quarter and Halves

Quarters and halves refer to portions of an ounce—a quarter-ounce and half-ounce, respectively—and are another common measurement for flower. While a quarter should last around two weeks, depending on your usage, halves can last even longer.


Want to minimize how many trips you take to the dispensary? Buy ounces. Ounces are great for stocking up long-term, lasting up to a month or more. Sometimes, you can get a better price for this volume, as well. Many states, including California, only allow dispensaries to sell a maximum of one ounce per day to a single buyer.

Conversions: How Many Grams in An Ounce, Quarter, and Eighth?

Understanding how much weed is in a gram, eighth, quarter, and ounce is crucial for any cannabis user. But it’s just as important to be able to convert between these different units.

Luckily, that’s not too difficult. In fact, most measurements got their names from their relationship with an ounce. As we mentioned, an “eighth” gets its name from being an eighth of an ounce; the same goes for quarters and halves.

The only unit that doesn’t fit nicely into this paradigm for weed measurements is the humble gram. That’s because grams are part of the metric system, while ounces are part of the Imperial system, used mainly in the U.S. It’s kind of like comparing feet to meters.

The easiest way to convert grams into another unit is to first change them into ounces. Technically, there are 28.3495 grams in each ounce. However, in the world of buying weed, it’s fine just to make things easy by making each ounce an even 28 grams for your conversions, since you aren’t doing the actual measuring and packaging. From there, it’s easy to convert into any of the other common weed measurements.

Here’s your cheat sheet:

  • Eighth-ounce = 3.5 grams
  • Quarter-ounce = 7 grams
  • Half-ounce = 14 grams
  • Ounce = 28 grams

Put Marijuana Measurements to Work When You Shop for Weed

With a better understanding of common marijuana measurements, you’ll be ready for your next trip to the dispensary. Or, you can skip the store entirely by ordering delivery cannabis, in your ideal measurements, directly to your home!