A QP of weed is a quarter pound. That is 4 ounces, or roughly 113 grams. If someone says they grabbed a QP, they are talking about a serious amount of flower, the kind of quantity you measure in ounces and store with intention, not the kind you keep in a jar on the counter.
The slang can trip people up, so let us put the numbers in plain terms and then talk about the part nobody mentions: keeping that much flower from going stale.
QP, by the numbers

Cannabis weights climb in a predictable ladder. Here is where the quarter pound sits:
- 1 gram — the baseline.
- An eighth — 3.5 grams.
- A quarter (of an ounce) — 7 grams.
- A half ounce — 14 grams.
- An ounce (a "zip") — 28 grams.
- A QP (quarter pound) — 4 ounces, about 113 grams.
So a QP is four zips stacked together. A full pound is 16 ounces, which makes a quarter pound exactly one-fourth of that. The math is simple once the slang gets out of the way.
Where the term comes from
"QP" is just an abbreviation of "quarter pound," and it caught on because it is faster to say. It lives in the same family as a "zip" for an ounce and a "dub" for twenty dollars worth. None of it is official terminology; it is community shorthand, and like most slang it varies a little by region.
Who actually buys a QP?

Four ounces is a lot. At a personal level, it is the kind of quantity a heavy, regular consumer might buy to bring down the per-gram cost, the way you would buy household staples in bulk. The catch is that bulk only saves money if the flower stays good. Buy a QP and let half of it dry out, and you have not saved anything.
The part nobody warns you about: keeping it fresh
Flower is perishable. Light, air, heat, and the wrong humidity all degrade it. Terpenes evaporate, the smell fades, and harsh, brittle bud is what is left. With a gram, you smoke it before that matters. With a quarter pound, freshness is the whole game.
A few rules keep a QP worth what you paid:
- Airtight and opaque containers. Glass jars or sealed containers, kept out of the light.
- Stable humidity. A two-way humidity pack holds the sweet spot so bud does not dry out or get damp.
- Cool and dark. A drawer or cabinet beats a sunny windowsill every time.
Or skip the bulk-storage problem entirely
There is another way to think about it. Part of why people buy in bulk is to lower cost per session, but pre-dosed formats solve the same problem without the spoilage risk. The Nano Joint is pre-dosed, diamond-infused flower in a single stick, no grinding, rolling, or packing, and nothing sitting open in a jar slowly losing its terpenes. You drop it into the Odin, heat it, and inhale.
And because the Odin uses air-based heating instead of a flame, a small amount of flower goes further than you might expect. Combustion burns through material fast and destroys a lot of what makes it potent in the process. Air-based heating extracts more from less, so the dose in a single Nano Joint is not a compromise — it is efficient by design. Bulk flower has its place. It just is not the only way to keep your cost-per-session low.
QP math people actually mess up
The slang ladder confuses people because it mixes two systems: small amounts get named by the gram, big amounts get named by the pound. The quarter pound is where the two meet, so it is worth nailing down. A quarter pound is 4 ounces. An ounce is a zip, about 28 grams. So a QP is four zips, roughly 113 grams, which also works out to about 32 eighths. Whatever way you slice it, it is a lot of flower to keep fresh.

That scale is exactly why bulk only pays off with discipline. A QP that dries out is worse value than an eighth you finish fresh. Whether you store it carefully in airtight glass or sidestep the problem with sealed, pre-dosed Nano Joint sticks and the Odin, the goal is the same: every gram you paid for actually makes it into a good session.
FAQ
How many grams are in a QP of weed?
Roughly 113 grams. A quarter pound is 4 ounces, and each ounce is about 28 grams, so 4 times 28 lands at 112 to 113 grams depending on how you round.
How many ounces is a QP?
Four ounces. "Quarter pound" means one-fourth of a 16-ounce pound, which is 4 ounces.
Is a QP the same everywhere?
The weight is. A quarter pound is always 4 ounces. The slang and pricing vary by region and market, but the math does not change.
How long does a QP stay fresh?
Stored airtight, dark, and at stable humidity, properly cured flower can hold up for several months to a year. Left open to air and light, it can dry out and lose flavor in weeks.
Bottom line: a QP is a quarter pound, 4 ounces, about 113 grams. Buy that much and freshness becomes your real job, unless you let a pre-dosed format like the Nano Joint and the Odin handle it for you.