How many grams are in an ounce of weed?

If you’re just venturing into the world of cannabis you are probably a little bit surprised by just how much math is involved in the process. Marijuana is generally measured within the context of an ounce.

Of course, you can purchase marijuana in smaller increments, via a gram at a time, or you can purchase in bulk. For example, an eighth (one eight of an ounce, 3.5 grams) usually costs significantly less than buying three grams of marijuana separately.

You can also get a quarter of an ounce (¼ or 7 grams), a half ounce (½ or 14 grams) or, a full ounce (28 grams). The more you buy the cheaper the price, so think of it as a bulk discount.

Credit: Medical Jane / Getty Images

Naturally, larger quantities of cannabis are possible but once you push past an ounce buying marijuana it becomes both cost prohibitive, and in many states, illegal.

As of now, most state with marijuana legalization allows up to one ounce of marijuana on hand.

That’s a precursory glance at the world of cannabis and the typical weights that come along with purchasing weed. Today we dive deep into the world of marijuana measurements. Read on, won’t you?

Marijuana Grams

The gram is your base unit of measurement when it comes to buying marijuana. A single gram is enough for a few joints (depending on how you roll) or one or two moderate blunts.

How much weight is a gram of weed?

A gram is the smallest weight of marijuana you can buy and it doesn’t weigh much of anything. To put this into context, a gram is one twenty-eighth of an ounce (1/28). One gram will easily fit into the palm of your hand.

How many grams are in an ounce of weed?

What Is An Eighth Of Weed? (3.5 Grams)

How many grams are in an ounce of weed?

An eighth is 1/8th of an ounce and is equivalent to 3.5 grams. It’s the most common weight purchased by cannabis consumers due to its affordability and convenience.

Eighths are ideal for casual to moderate smokers. An eighth can be rolled into roughly 7 half-gram joints or 14 quarter-gram bowls. The price of an eighth of cannabis can vary greatly around the country, but they generally range from $25-$55 in Colorado/California to upwards of $60 on the East Coast (you can pick up an eighth of Canna Comfort’s Suver Huze organic hemp flower for only $30).

I’ve discovered you can even fit an eighth of rolled cannabis in a safety case.

What Is A Quarter Of Weed? (7 Grams)

How many grams are in an ounce of weed?

A quarter – sometimes referred to as a quad – is 1/4th of an ounce and weighs in at 7 grams. Buying by the quarter is also very common as it allows heavier smokers to really get acquainted with a strain – an eighth can go quickly!

At the quarter ounce level, some minor price breaks can sometimes be seen (depending on the specific dispensary or caregiver) but don’t expect them.  Depending on your area, a quarter ounce of cannabis can run anywhere between $50 to $100.  A quarter of hemp flower will generally run around $55.

Canna Comfort’s excellent Suver Haze is only $50 per Quarter.

What Is A Half Ounce? (14 Grams)

How many grams are in an ounce of weed?

A half ounce equates to 14 grams of cannabis. Substantial price breaks, in terms of price per gram, typically begin at the half ounce quantity. For reference, many infused butter/oil recipes (for edibles) call for a half ounce of dried cannabis.

You are absolutely free and able to cook with less, just be aware that, depending on your recipe, it may lower the potency of the finished edibles.

What Is An Ounce Of Cannabis? (28 Grams)

How many grams are in an ounce of weed?

An ounce of cannabis (or an ounce of anything, for that matter) weighs 28 grams. Also known as a zip, buying by the ounce is the most cost-effective way to purchase legal cannabis. In fact, many dispensaries and caregivers offer ounce specials. If you are a daily cannabis or hemp flower consumer, ounces are the way to go.

For reference, Canna Comforts’ Suver Haze strain runs only $90 for an ounce.

How to convert ounces of weed to grams

For reference, here is a quick conversion guide from ounces of weed into grams.

  • Eighth (1/8) ounce = 3.5 grams
  • Quarter (1/4) ounce = 7 grams
  • Half (1/2) ounce = 14 grams
  • Full (1) ounce = 28 grams

The price of flower varies depending on the quality of the product and the market in which it is sold. You can expect to pay between $4 and $20 for a gram of flower—sometimes getting a price break when you purchase larger quantities.

Express Summary: Ounces vs grams of weed

Cannabis quantities can be confusing. How much is a gram of weed? How big is an ounce? And an eighth is an eighth of what, exactly? Let’s zoom out. Cannabis flower is often sold in quantities, ranging from one gram to one ounce. Some common terms you hear are an eighth, which means an eighth of an ounce (or three and a half grams), a quarter ounce (or seven grams), and a half ounce, (14 grams).

The smallest amount of cannabis flour you can typically buy is one gram. A gram is going to roll about two joints or three to four bowls, making it a great option for the occasional consumer or when trying a new strain. Next size up is three and a half grams, or an eighth. That’s enough for about seven joints, seven grams or quarter ounce will get you about 14 joints, which means that 14 grams (or a half ounce) can roll nearly 30 joints. So, a full ounce of cannabis, which is 28 grams, can roll nearly 60 joints or pack upwards of 100 bowls. It’s worth noting that pre-rolled joints are often sold in half gram or full gram quantities. You may choose a half gram to share with a friend or a full gram for a larger group.

The last thing to know is about density of your cannabis flower, as it varies greatly by strain. So an eighth of dense gelato buds might look full and dense, while an eighth of Maui Wowie buds look light and fluffy.


This is the most obvious way to check your measurements. It’s also the most accurate way to go about it.

If you’re looking to purchase a scale, go for accuracy within 0.1 grams. This means you should not attempt to use a kitchen scale. You should also be looking for something with a high capacity, at least to 200 grams.

You don’t have to be extremely precise, and you can probably find a relatively good scale for cheap on the internet.

Penny and Ruler

You can create a makeshift scale by laying a ruler on a flat surface and using a penny on one end and weed on the other. Any penny after 1982 should weigh 2.5 grams, so when you’re “scale” is balanced, you’ll know you have 2.5 grams.

Use Your Phone

Kids these days and their newfangled phone apps, let me tell ya. Now they can measure their weed just by placing it on the screen!

This isn’t the most accurate way to go about it, but in a pinch, downloading a highly-rated scale app to weight out your weed is better than eyeballing it. Be careful though – a lot of these apps are pretty inaccurate, and aren’t as easy to use as you might think.

Final Thoughts

If you get your weed from an unregulated source, being able to double-check the accuracy of the measurement is important. Buying from the dispensary should make it easy to know the measurements are accurate, though the amounts will still be rounded.

Still, if you are a heavy smoker and frequently buy small amounts that are rounded down, you may be doing yourself a disservice. All those little numbers add up.

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