Weed Measurments Explained

If you’re new to the world of cannabis, the measurements used for cannabis amounts can seem confusing. Depending on the type of cannabis product, you might be dealing with ounces, eighths, grams, milligrams, or even milliliters.

That’s why we’re here to clear up the intricate world of cannabis measurements by explaining everything you need to know. Continue reading below to find out how weed measurements work and what the approximate sizes are.

Cannabis Flower

Way back in the day, cannabis flower had even more confusing measurements. Getting weed wasn’t based on weight, but amounts called dimes, lids, or a four-finger bag.

Luckily we don’t have to deal with this cryptic measuring system anymore. However, cannabis flower measurements can still be a bit complex.

That’s because a combination of grams and ounces are used for measuring weed. An ounce is the baseline measurement for weed, while a gram is the smallest unit.

That means that you can buy one gram of weed, but if you want to purchase more, then you start purchasing in ounces. Of course, you can buy two grams, but there are usually discounts by the ounce.

For example, here’s what the standard cannabis flower measurement chart might look like if you walk into a Florida dispensary:

  • 1 gram – the smallest measurement of weed and the smallest amount you can buy
  • 1/8 ounce – about 3.5 grams, which is the standard amount of cannabis sold
  • 1/4 ounce – about 7 grams
  • 1/2 ounce – about 14 grams
  • 1 ounce – about 28 grams

Now you might be thinking—what do these numbers look like in real life? It’s easy to see the numbers, but they’re difficult to visualize.Weed Measurement 01 2 scaled

That’s why we’ve prepared this handy visual guide to compare weed amounts with familiar objects:

  • 1/2 gram – the size of a penny
  • 1 gram – the size of a grape
  • 1/8 ounce – the size of a kiwi
  • 1/4 ounce – the size of an apple
  • 1/2 ounce – the size of a grapefruit
  • 1 ounce – the size of a coconut

As you can see, an ounce is a lot of weed. However, weed measurements are relative to how much someone smokes. One gram for an occasional smoker can last weeks while only lasting a few hours with an avid smoker.

Joints or Pre-Rolls

The only time you can find something smaller than a gram in a Florida dispensary is from pre-rolls or joints. Joints or pre-rolls are pre-rolled cannabis flowers like cone-shaped cigarettes packed with cannabis–ready to light up.

In the biggest pre-rolls, you’ll find one whole gram of weed. However, in many pre-rolls, you can find 1/2 gram or 1/4 gram of cannabis.


With concentrates, size isn’t everything. That’s because concentrates are an extract of cannabis, giving them a potency of up to 80% THC.

These powerful concentrates can be vaporized on a special bong called a ‘dab rig’ or through a handheld vaporizer. These concentrates are usually a sticky, waxy substance or have a texture like hard candy.

Concentrates usually only come in two sizes:

  • 1/2 gram – the size of a pumpkin seed
  • 1 gram – about the size of a tablet of chewing gum

Although these or small sizes, concentrates pack a THC-filled punch. Only about a tiny dot of cannabis concentrate is enough to get stoned for hours.

Vape Cartridges

Things can get a little confusing when it comes to THC vape cartridges. Vape cartridges are also concentrates but in a liquid form that’s vaped through a vaporizer.

Since the concentrate is liquid, it must have its measurements in milliliters (ml). However, that’s not always the case because sometimes they’re listed in grams.

Often, you’ll see vape cartridges sold as:

  • 5 ml or 1/2 gram
  • 1 ml or 1 gram

To get an idea of how much liquid there is, one ml of liquid is about 20 droplets. Although that may not sound like much, THC vapes are much more potent than cannabis flower.


Lastly, we have edibles, which may cause the most confusion of all. That’s because edible strength is usually measured in milligrams (mg).

Since cannabis edibles come in a wide range of sizes and flavors, they usually can’t be based on the edibles’ weight. Also, most edibles are infused with cannabis concentrate.

That means that an extract of cannabis flower, usually THC oil, is used to give edibles their powerful kick. On all packages of delicious cannabis edibles are an amount of THC given in milligrams.

You’ll often see that edibles have a total amount of milligrams of THC and then a dose of THC. For example, a chocolate bar will have 100 mg of THC total but 10 mg per serving.

That means that each piece of the bar should contain 10 mg of THC, and there are 10 pieces total. Having a precise dose is important for edibles because the way THC works through an edible is much stronger than from smoking or vaping.

Marijuana Equivalencies

A lot of people are curious about the equivalencies between flowers, concentrates, and edibles. For example, how much flower is used in a gram of concentrate or a cannabis chocolate bar?

The answer to this question isn’t simple because of the differences in THC amount between cannabis. To explain, we need first to consider that all cannabis flower have different THC concentrations.

So if a strain of weed contained 20% THC, then one gram of that weed would have 200 milligrams of THC in it. If a gram of concentrate has about 80% THC (or 800 milligrams), then that concentrate is 4x more potent than the flower.

That means it takes about 4 grams or around an eighth ounce of flower for 1 gram of concentrate. If we look at edibles, then 100 mg should be about a half gram of flower.

Find Your Amount With a Medical Marijuana Card

Now that you know everything about weed measurement, you’re ready to walk into a Florida dispensary with confidence. However, to obtain cannabis in Florida, you’ll first need to get a medical marijuana card.

If you don’t have one or need to renew your medical marijuana card, then Compassionate Healthcare of Florida can help. Compassionate Healthcare of Florida makes getting or renewing your medical marijuana card a breeze.

With your medical marijuana card in hand, you’ll be able to walk into any Florida dispensary and find the amount of weed that’s perfect for you.