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How Much Weed Is in a Cart

Vape cartridges, often referred to as carts, are filled with cannabis oil concentrates and are typically available in two standard sizes: half-gram (0.5g) and one full gram (1g). These cartridges can contain various types of cannabis oil, including CO2, distillate, BHO (Butane Hash Oil), and PHO (Propane Hash Oil). Regardless of the extraction method, the quantity of cannabis oil in a cart remains the same.



Understanding THC Content in Vape Carts

The potency of cannabis oil is usually measured by its THC (tetrahydrocannabinol) concentration, often expressed as a percentage. For instance, if a 1g cart contains 90% pure THC oil, it means there are 900 milligrams of THC in that cartridge. Comparatively, a half-gram cart with the same THC concentration would contain 450 milligrams of THC.

This high concentration of THC is why these products are broadly referred to as “concentrates.” They offer a more potent experience than traditional cannabis flower (bud).


Comparing THC in Carts and Cannabis Flower

To put this into perspective, let’s compare the THC content in vape carts with that in cannabis flower. A top-shelf cannabis flower, known for its high THC content, might have about 30% THC. Therefore, a typical one-gram joint of this flower would contain approximately 300 milligrams of THC.

However, it is important to note that most commercially available cannabis, whether for recreational or medical use, generally tests well below this 30% THC mark. The THC content in cannabis flower typically ranges from about 14% to 25%. This means:

  • 14% THC content = 140 milligrams of THC per gram of flower
  • 20% THC content = 200 milligrams of THC per gram of flower
  • 25% THC content = 250 milligrams of THC per gram of flower


Potency Comparison

To illustrate the potency difference between vape cartridges and cannabis flower, consider this example:

  • A flower with 20% THC content equates to 200 milligrams of THC per gram.
  • A cartridge with 80% THC content equates to 800 milligrams of THC per gram.

In this scenario, the vape cartridge is four times more potent per gram than the cannabis flower. Therefore, one gram of an 80% THC vape cartridge is roughly equivalent to four grams of 20% THC cannabis flower in terms of THC content.


How Many Vape Hits Equal a Joint?

When comparing vape hits to smoking a joint, several factors come into play, including the concentration of THC in the vape oil and the THC content in the cannabis flower.

  • Understanding THC Content

Vape cartridges contain concentrated cannabis oil, often ranging from 60% to 90% THC. 

Cannabis flower varies widely in THC content. Lower quality buds might have around 10% THC, while top-shelf varieties can reach up to 35% THC.

On average, mid to high-quality cannabis flower runs about 20% THC.

One puff of vape oil is generally considered equivalent to 4–5 tokes on a joint or bong.

  • Calculating Equivalency

To estimate how many vape hits equal one joint puff:

Vape Cartridge (Example: 80% THC):

If a vape cartridge contains 80% THC, one puff would deliver a concentrated dose equivalent to several tokes on a joint or bong. This is because of the higher THC concentration per hit.

Cannabis Flower (Example: 20% THC):

A joint rolled with cannabis flower containing 20% THC would require multiple puffs to reach a comparable THC intake from one puff of an 80% THC vape cartridge.



In summary, the amount of cannabis in a vape cart can be better understood by looking at its THC content. A 1g cart with 90% THC oil contains 900 milligrams of THC, while a 0.5g cart with the same concentration has 450 milligrams of THC. Comparatively, cannabis flower’s THC content varies, with top-quality flowers containing up to 30% THC, but more commonly found between 14% and 25%. Consequently, vape cartridges, with their higher THC concentrations, offer a more potent experience per gram than traditional cannabis flower.


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