Our editors pick the products and services we write about. When you buy through our links, we may get a commission. Learn more.


Why You Can Trust American Marijuana

American Marijuana has been a trusted cannabis site since 2014, with a team of experts in the field working to ensure you’re only receiving premium quality information.

Editorial Process Content Integrity

How Many Milligrams of THC are in a Dab?

Since a dab is a concentrate, users can expect to receive stronger potencies of THC. On average, products like wax and shatter tend to contain around 70% THC. However, some of the strongest dabs on the market will contain up to 90% THC. If you compare this to a joint, the majority of strains contain less than 25% THC.

Unfortunately, it’s not easy to measure how much THC you’re consuming with each dab you take. Still, there are ways to get an estimated dosage. If you have 0.5 grams of a dab with 70% THC, the wax will likely have 0.35 g (350 mg) of THC. It’s worth noting that you may lose some THC upon vaporization. As such, you may end up with around 235 mg per hit.

On top of this, the amount you inhale plays a major role. If you’re taking longer and heavier hits, you’re naturally going to get more THC than if you take shorter and lighter ones.

Either way, when it comes to dabbing marijuana, it’s vital to understand how strong these products are. With that in mind, it’s in your best interest to start with a small amount and see how it makes you feel. From there, you can work your way up to stronger doses.

And if you find that concentrate products are too strong for you, you can always opt for another marijuana consumption method.

How Many Milligrams of THC in a Bowl?

When it comes to the amount of THC in a bowl pack, there are two important factors to consider:

  1. How big the bowl is
  2. How much THC is in the strain you’re smoking

Therefore, to make calculations, we’re going to have to make a few assumptions about your bowl and the marijuana you’re smoking.

The average bowl will fit about 0.25 grams of weed. Most marijuana flower contains an average of 18% THC, with one gram of weed containing about 180 mg of THC. This would mean each bowl pack contains roughly 45 mg of THC.

Still, even this number isn’t 100% accurate. Many experts believe you can lose up to 60% of a product’s THC count from combustion (see below for more information). If we take this loss into account, averaging that you lose about 40% of a product’s THC count, then you’re likely receiving about 18 mg into your body.

Naturally, we can’t make exact estimations on how much THC you’re consuming because there are so many factors at play. Therefore, if you’re new to smoking cannabis out of a bowl, you’ll want to start small and work your way up.

How Much THC is in a Bowl

How Much THC is in a Joint?

Similarly to calculating the amount of THC in a bowl, you run into the same issues with a joint: the strain’s THC count, the loss from combustion, and how much marijuana you’re packing into the paper.

Most joints contain an average of 1 gram of marijuana with about 18% THC. Since you lose about half of that to combustion, you can expect an entire joint to provide you with 90 mg of THC.

We admit this is an oversimplified way of looking at a much more complicated process. However, when you look at the finer details, you begin to get an idea of why we chose such a simplified method.

THC Calculation Guide

How Much THC Do You Lose to Combustion?

Generally speaking, you lose anywhere from 40% to 60% due to combustion. You tend to lose more when smoking a bowl or joint in comparison to a dab due to the nature of consumption.

With that said, you can make calculations on how much cannabis you’re inhaling. For example, if you have 1 gram of marijuana in a joint at 20% THC (or 200 mg), you’re likely going to lose around 40% of that. All this combined leaves you with 120 mg entering the body.

How to Calculate THC Dosage

If you’re curious about how many milligrams (mg) of THC are in a product, there are two factors to consider:

  1. The cannabis weight measurement
  2. The THC percentage

It’s easiest to measure from 1 gram of marijuana as you’re simply moving the decimal point over once. For example, 1 gram of 20% THC will have 200mg of THC.

Keep in mind that this measurement is made BEFORE combustion. If you want to factor in combustion as well, you will need to after you garner the general THC milligram count.

Dab vs. Bowl vs. Joint Comparison Chart

To offer a more visual perspective on all the information provided above, feel free to use our comparison chart. However, it’s important to keep in mind that these are very general calculations. Truly, there’s no 100% accurate way to measure the amount of THC you consume in a single session.

Consumption Method Potency THC Count
Dab (0.5 g)
235 mg
Bowl (0.25 g)
45 mg
Joint (0.32 g)
38.4 mg

Final Word

The consumption method of your choice (and subsequent THC potency) ultimately comes down to your cannabis preferences. If you’re looking for strong effects, dabs are your best bet. If you’re looking for something lighter, you’ll likely enjoy a bowl the most.

Either way, it’s important to be aware of how much THC you’re consuming in a single session. While you can’t get a 100% accurate measurement due to the varying factors, you can get a general idea of what you’re putting inside your body. And with this idea, you can make educated assumptions as to how much cannabis is right for you.

Frequently Asked Questions