How Many Grams in an Ounce of Weed? (Weed Measurements Chart)

October 22, 2026 Bianca 0 Comments

Eighth, quarter, zip, dime bag… cannabis has its own language for amounts, and it can feel like a math quiz nobody prepared you for. If you’ve ever stood at a dispensary counter (or scrolled an online shop) wondering how many grams are in an ounce of weed, you’re in good company.

I’m Bianca, and here’s a simple, no-judgment guide to weed measurements: how many grams are in an ounce, what an eighth and a quarter mean, a handy chart, the common slang, and how much you actually need.

The short answer: there are about 28 grams in an ounce of weed (28.35 to be exact, but the cannabis world rounds to 28). An eighth is 3.5 grams, a quarter is 7 grams, a half ounce is 14 grams, and a pound is about 448 grams. For most casual adults, a gram or an eighth goes a long way.

Shopping for flower? Society’s Plant’s THCA flower lists sizes clearly and comes with lab reports, so you know what you’re getting.

Weed Measurements Chart

Name	Grams	Fraction of an ounce	Common slang
Gram	1g	1/28	“A G,” “a dub” (sometimes)
Eighth	3.5g	1/8	“Eighth,” “slice”
Quarter	7g	1/4	“Q,” “quad”
Half ounce	14g	1/2	“Half,” “half O”
Ounce	28g	1	“Zip,” “O,” “oz”
Quarter pound	112g	4	“QP”
Half pound	224g	8	“HP”
Pound	448g	16	“P,” “elbow”

Note: the cannabis industry rounds an ounce down to 28 grams, which is why a pound is usually listed as 448 grams instead of the exact 453.6.

How Many Grams Are in an Ounce of Weed?

An ounce of weed is 28 grams. Officially, one ounce equals 28.35 grams, but nearly every dispensary and online shop sells an ounce as 28 grams. That’s why you’ll see the “eighth” listed as 3.5 grams (28 ÷ 8 = 3.5).

How Many Grams Are in an Eighth?

An eighth is 3.5 grams, or one-eighth of an ounce. It’s the most popular size for flower because it’s enough to try a strain without committing to a lot.

How Many Grams Are in a Quarter?

A quarter is 7 grams, or one-quarter of an ounce. It’s two eighths together.

How Many Grams Are in a Half Ounce?

A half ounce is 14 grams. It’s often a better value per gram than smaller sizes, but only if you’ll use it before it loses freshness.

How Many Grams Are in a Pound?

A pound is about 448 grams in cannabis terms (16 ounces × 28 grams). Most people will never need anything close to that, and in many states it’s far above legal possession limits.

Weed Slang for Amounts, Decoded

Dime bag: traditionally about $10 worth, often around a gram or less, depending on where and when.
Dub: about $20 worth, often around a gram or two.
Eighth: 3.5 grams.
Quad or Q: a quarter ounce, 7 grams.
Zip or O: an ounce, 28 grams.
Elbow: a pound (a play on “L-B”).

Dollar-based slang like “dime” and “dub” isn’t a fixed weight, so it varies a lot. Weights in grams are always clearer.

How Much Weed Do You Actually Need?

This depends on how you use it and how often. Some rough examples:

A gram can roll about one or two small joints, or several bowls, depending on size.
An eighth can last an occasional user weeks.
A quarter or more usually makes sense only for regular users who’ll use it while it’s fresh.

If you’re new, starting small is the way to go. Flower slowly loses potency and aroma over time, so buying more than you’ll use isn’t really a deal. My guide on whether weed can go bad explains how long it lasts and how to store it.

How Much Does Weed Weigh in a Joint?

A typical joint holds somewhere between 0.3 and 1 gram of flower. Pre-rolls are usually labeled with the exact weight, often 0.5g or 1g. If you’re new, a smaller pre-roll (or just a puff or two) is plenty. Society’s Plant’s THCA pre-rolls list the weight on the label.

Grams vs THC Milligrams: Don’t Mix Them Up

Here’s a common point of confusion. Flower is sold by weight in grams, but edibles are labeled by THC in milligrams. They’re not the same thing:

1 gram of flower that’s 20% THC contains about 200mg of THC in total, but you don’t absorb all of it when you smoke.
A “10mg” gummy contains 10 milligrams of THC, and you absorb it differently when you eat it.

That’s why comparing a joint to a gummy isn’t simple. With edibles, start low (often 1 to 2.5mg if you’re new) and wait at least 2 hours. My guide to low-dose THC gummies explains more.

How to Tell If You’re Getting the Right Amount

Buy from licensed, lab-tested sources that list exact weights.
Use a small digital scale if you want to double-check. They’re inexpensive and accurate to 0.1g.
Remember that moisture matters. Fresher, slightly moist flower weighs a little more than very dry flower.
Check THC percentage and total THC, not just weight. My guide to THCA vs THC explains how to read total THC.

Common Mistakes When Buying by Weight

Buying in bulk to “save money.” A bigger size often costs less per gram, but if it sits for months, it loses potency and flavor. Only buy what you’ll use while it’s fresh.
Assuming more grams means a stronger high. Potency depends on THC percentage and how much you use at once, not how much is in the jar.
Confusing flower with pre-ground or shake. Pre-ground flower and shake are often cheaper per gram, but they can dry out faster. My guide on pre-ground weed explains the tradeoffs.
Not checking the date. Look for a recent packaging or harvest date when you can.
Relying on slang. “Dime” and “dub” mean different amounts in different places. Always ask for grams.

How Much Weed Can You Legally Have?

Possession limits vary by state. In many adult-use states, the limit for adults 21+ is one ounce (28 grams) or more, while other states allow much less or none at all. Hemp rules are also changing at the federal level. Always check your state’s current rules. This isn’t legal advice, just a friendly heads-up.

Safety Notes for Moms

Store flower in a locked container away from kids and pets. If a child eats any cannabis, call Poison Control at 1-800-222-1222 or 911.
Keep it airtight to protect freshness and control smell. My guide on how to get rid of weed smell has tips.
Don’t drive or care for young kids alone while feeling the effects.
Talk to your doctor if you’re pregnant, breastfeeding, or taking medication.

Frequently Asked Questions

How many grams are in an ounce of weed?

About 28 grams. The exact conversion is 28.35, but cannabis is sold using 28 grams per ounce.

How many grams are in an eighth?

3.5 grams.

How many grams are in a quarter?

7 grams.

How many grams are in a half ounce?

14 grams.

How many grams are in a pound of weed?

About 448 grams, using 28 grams per ounce.

What is a zip of weed?

A zip is slang for an ounce, or 28 grams.

How many joints can you roll with an ounce?

It depends on the size, but at about half a gram each, an ounce makes roughly 50 to 60 joints.

The Bottom Line

An ounce of weed is 28 grams, an eighth is 3.5, a quarter is 7, and a half is 14. Weights in grams are always clearer than slang. Buy only what you’ll use while it’s fresh, store it locked and airtight, and check your state’s rules.

Keep Reading

This article is for general information only and isn’t medical or legal advice. Talk to your doctor before using cannabis or hemp products, especially if you’re pregnant, breastfeeding, or taking medication. These statements have not been evaluated by the Food and Drug Administration. Hemp products are for adults 21+ and are not intended to diagnose, treat, cure, or prevent any disease. High Society Mama is affiliated with Society’s Plant.