A QP of weed equals 113.4 grams, or four ounces. The term QP stands for quarter pound, which is one-fourth of a full pound of cannabis. Most individual consumers never purchase at this volume, as legal recreational markets typically cap single transactions at one ounce.
Cannabis quantity has its own vocabulary and it trips people up constantly. Grams, eighths, zips, QPs. The terms bounce between metric and imperial with no clear logic. At Chunky Academy, we put this weed measurements guide together so you never have to do the mental math at the counter again.
Weed Measurements: The Full Breakdown
The gram is the base unit of measurement for cannabis globally. Everything else is a fraction or multiple of an ounce, converted into grams for labeling. Here is how each quantity stacks up.
Gram (1g)
One gram is the smallest purchase you will find at most dispensaries. It is enough for one or two joints depending on how you roll them. Good for sampling something new without spending much.
Eighth (3.5g)
An eighth is one-eighth of an ounce, which lands at 3.5 grams. It is the most common purchase size for a reason. You get enough flower for multiple sessions, the price per gram is reasonable, and you are not locked into a large quantity of one strain. If you want to explore a well-stocked menu at this size, shop Chunky Academy's selection of premium THCa flower.
Quarter (7g)
A quarter ounce equals 7 grams. Regular consumers tend to buy here because the per-gram value starts improving over buying individual eighths. Seven grams gives most people a comfortable one to two weeks of material.
Half Ounce (14g)
Fourteen grams. At this point you probably have a strain you trust and you are not interested in variety for a while. Half ounce purchases make sense for consistent consumers. Know your local purchase limits before you get here, as some states track these transactions more closely.
Ounce (28g)
An ounce, often called a zip, is 28 grams and the ceiling for most single retail transactions in legal markets. Buying by the zip usually gets you the best per-gram price available at the dispensary level. Simple math, big savings.
QP of Weed (113.4g)
A QP, or quarter pound, equals 113.4 grams. That is four full ounces. This is not a quantity most individual consumers purchase in a single trip. It lives mostly in wholesale and commercial contexts, and in most legal recreational states, buying a QP in one transaction exceeds what the law allows for personal purchases. Still, knowing the number matters, especially if you hear the term and want to understand what someone is actually talking about.
Half Pound (226.8g) and Full Pound (453.6g)
A half pound is 226.8 grams. A full pound sits at roughly 453.6 grams, which translates to somewhere around 900 or more average joints depending on how they are rolled. These numbers come up in growing and distribution conversations, not typical retail ones.
How Much Does a QP of Weed Cost?
Price varies significantly depending on quality, strain, and where you are buying. At the wholesale level, a QP of weed might range anywhere from a few hundred dollars for mid-tier product to well over a thousand for top-shelf flower. Retail consumers rarely encounter QP pricing directly since most dispensaries sell by the gram, eighth, quarter, or ounce.
If you are trying to estimate value, the easiest approach is to look at the per-gram price on the items you already buy and multiply up. A dispensary selling eighths at $40 is pricing flower at roughly $11.43 per gram. At that rate, 113.4 grams would cost around $1,285 before any bulk discount. The actual per-gram price drops considerably when product moves at volume, which is why QP pricing exists in the first place.
What is a Zip and How Many Zips are in a QP?
A zip is slang for one ounce of weed, which equals 28 grams. The nickname comes from the ziplock bag that an ounce of flower traditionally filled. It stuck around and became one of the more widely used informal terms in cannabis culture, even as legal dispensaries moved toward standard labeling.
A zip is the largest quantity most individual consumers buy in a single legal transaction. Four zips make up one QP. So if you are trying to visualize how much 113.4 grams actually is, think of four full ounce bags stacked together. That is a QP of weed.
Why Weed Measurements Mix Grams and Ounces
This hybrid system is a product of history. Before legal markets existed, cannabis culture developed its own informal conventions around imperial fractions because that is what the broader American market used. Eighths and quarters stuck. When dispensaries came online and needed to comply with packaging regulations, the metric system became the labeling standard.
The result is a system where you ask for an eighth and receive a bag stamped 3.5g. Both mean the same thing. According to the National Institute of Standards and Technology, one avoirdupois ounce equals exactly 28.349523125 grams, which is why the rounding in cannabis retail lands where it does.
Cannabis Weight Chart: Quick Reference
Keep this handy the next time you need to convert between units:
- 1 gram = 1g
- Eighth = 3.5g (1/8 oz)
- Quarter = 7g (1/4 oz)
- Half ounce = 14g
- Ounce (zip) = 28g
- QP (quarter pound) = 113.4g
- Half pound = 226.8g
- Full pound = 453.6g
Screenshot it. Bookmark this page. Either works.
What to Think About Before Buying in Bulk
Buying more usually means paying less per gram. That logic is sound. But a few things are worth considering before you commit to a larger quantity.
Cannabis does not last forever. Stored properly in an airtight container away from heat and light, flower can hold its quality for several months. The Cannabis Regulators Association points to storage conditions as a key factor in maintaining potency and flavor over time. If you consume infrequently, a large purchase may mean the last portion sitting around long enough to noticeably degrade.
Check your state's purchase limits before assuming you can walk out with a half ounce or more in one transaction. Most recreational states cap individual purchases at one ounce per visit. A QP is four times that.
Variety also matters more than people expect. Locking into a large quantity of one strain is fine if you know you love it. If you are still exploring, smaller purchases give you more room to try different options. The Chunky Academy blog has strain guides and selection tips worth reading before you decide.
