How Many Ml Is 1 Gram Of CBD Oil

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CBD oil labelling across different brands and products tend to be inconsistent, often leaving both novice and experienced consumers confused. When we are asked, “How much CBD is in a gram?”, our first response is, “A gram of what?” How Much CBD is in a Gram of CBD Oil? There is 600 mg of CBD in the well loved bottle of Cordial Organics Balance. The one ounce bottle, or 30 ml, translates to a total Accurately converting percentage to milligrams per milliliter can be confusing, and it's easy to get it wrong if you don't factor in the density of the liquid suspension. You know how oils typically float to the top when mixed in water, while other substances like honey sink to the bottom? That's because their density and…

How to Read CBD Oil Labels

How to Read CBD Oil Labels to get the most from your product

Currently the cannabidiol (CBD) industry is pretty much self-regulated and under the control of the U.S. Food & Drug Administration. Because of this, CBD oil labelling across different brands and products tend to be inconsistent, often leaving both novice and experienced consumers confused.

However, with CBD considered a “dietary supplement” that has to adhere to certain labelling requirements, there are key elements that, when knowing how to read it, can be useful in helping to decipher what is in a product and how to use it.

Here we go over these elements, teaching you how to read CBD Oil Labels so you can get the most from your product and do so safely.

Key Elements on CBD Oil Labels Explained

Product Size

CBD oil bottles are generally available in 15 ml, 30 ml and 100 ml bottles which will help determine the amount of CBD per milliliter, an important indicator of CBD concentration/strength/potency.

Ingredients

Every bottle must have an ingredients list. Sometimes this includes only active compounds, however more often than not also a list of “other/inactive” ingredients as well. In the case of CBD oil, this can include the carrier oil and other additives such as flavorings, colorings and sweeteners.

Full Spectrum, Broad Spectrum or Isolate
The label should also indicate the type of CBD the product contains.

Full Spectrum:
Includes a wide range of terpenes and other cannabinoids in addition to CBD and in some THC ( Total milligrams of CBD in the bottle divide by bottle size in ml = CBD mg / ml

For example: If you have a 30 ml bottle containing 1,500 mg of CBD 1,500 ÷ 30 = 50 mg of CBD per 1 ml

However, CBD oil labels often only shows the percentage of CBD in which case the percentage needs to be converted into milligrams first.

Formula: 1 milliliter = 1 gram = 1000 milligrams of CBD oil.

For example:
So, if you have a 30 ml bottle of CBD with a concentration of 15% CBD 15% of 3,000 mg = 1.5 x 3,000 = 4,500 mg of CBD per bottle 4,500 ÷ 30 = 150 mg of CBD per 1 ml

Occasionally, as in the case with the popular brand Charlotte’s Web (see graphic), a product will not indicate the amount of hemp extract and not the amount of CBD. This requires the consumer to convert milligrams of hemp extract into milligrams of CBD to get dosage which can be tricky.

Depending on the type of extract, this can either refer to the total cannabinoid content, or it could be a direct substitute for CBD.

If it’s the total cannabinoid content: The CBD amount will be less than the labelled amount for example, 1,000 mg hemp extract may only contain 700 mg of CBD.

If it’s a direct substitute: The CBD amount will be the same as the labelled amount for example, 1,000 mg of hemp extract will contain 1,000 mg of CBD.

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To find out which it is, check the third party lab tests for the product or reach out to the company directly.

Additional Useful Information Explained

Third Party Lab Testing

Although not required, if a CBD company is willing to invest in third-party lab testing and be transparent about their products and their contents, it can be reassuring when making a purchase.

Extraction Methods

Carbon Dioxide (CO2) Extraction
Uses supercritical carbon dioxide to separate the CBD extract and other compounds from the plant material and considered the “cleanest” and safest extraction method.

Solvent Extraction
Uses a hydrocarbon or natural solvent to dissolve the CBD extract and other compounds from the plant material but in the case of hydrocarbons can leave behind toxic residues in poorer quality oils.

Do Bigger Numbers Mean It’s Better?
It is a common misconception that more means more, however a bottle with a high CBD content is not always “stronger” than one with fewer milligrams. For example, a 30 ml bottle of 1,000 mg CBD has the same potency as a 15 ml bottle of 500 mg CBD at 33.3 milligrams of CBD per milliliter.

How To Calculate Price / Milligram

To calculate the price per milligram of CBD is simple.

Formula:
Product Price / CBD Content in MG = Price Per Milligram of CBD Content

For example:
A 30 mg bottle containing 1,500 mg of CBD for €79,95
€79,95 / 1,500 mg = €0,05 per milligram of CBD content

While the CBD industry is largely unregulated, there are certain labelling requirements that must be included on CBD oil labels from legitimate brands, and include:

  • the number of milligrams or percentage of CBD in the bottle
  • the bottle size
  • the recommended serving size
  • the ingredients as well as;
  • a batch number

With this information, you can be assured that your CBD oil is not only legitimate and safe to use, but will also help you to use it properly so you can get the maximum benefits from your investment.

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How Much CBD is in a Gram?

There is 600 mg of CBD in the well loved bottle of Cordial Organics Balance. The one ounce bottle, or 30 ml, translates to a total of 28.35 grams. Back to the original question: How much CBD is in one gram? One gram of Balance has 21.16 mg of CBD. Much easier to remember: One mg of CBD per drop.

How Much CBD is in a Gram of Flower?

This is a potentially complicated answer for a straightforward question. Hemp, like marijuana has three species: Cannabis sativa, cannabis indica and cannabis ruderalis. Within the species there are many strains. A gram of the strain ACDC flower will yield a different amount of CBD than a gram of the strain Panama Red. To further complicate the question, extracting CBD from different parts of a plant will yield different totals. One gram of stalk will have a different CBD quantity than one gram of flower. How much CBD is in one gram? One gram of hemp flower will generally yield between 100-200 mg of CBD.

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How much CBD is in a Gram of Hemp Seeds? Hemp Oil?

The health benefits of hemp seeds and hemp oil are plenty. See this post about how and why you should invite hemp hearts (de-hulled hemp seeds) and hemp oil into your diet. How much CBD is in one gram? One gram of hemp seeds or hemp oil contains little or no CBD.

How Much CBD is in a Gram of Isolate?

Isolate is a powder-like substance that is pure CBD. Through the process of extraction, the CBD molecule is isolated from the other molecules in the cannabis plant. We discussed various extraction methods in this blog post. How much CBD is in one gram? Depending on the isolate one gram of isolate contains 99% CBD.

How much CBD is in a gram of High Quality Weed?

Another potentially complicated answer due to species, strains and plant molecular diversity. However, let’s assume the phrase high quality weed means the type of high THC flower one might smoke recreationally to get high. If a weed plant is high in THC it is typically not high in CBD. How much CBD is in one gram? Blueberry Kush, for example, has no CBD.

The Good Lab

Marijuana Math: Calculating milligrams per milliliter in liquids

Accurately converting percentage to milligrams per milliliter can be confusing, and it’s easy to get it wrong if you don’t factor in the density of the liquid suspension.

You know how oils typically float to the top when mixed in water, while other substances like honey sink to the bottom? That’s because their density and molecular weight are different. One is lighter and less dense, while the other is heavier and more dense.

In order to accurately calculate milligrams per milliliter, you’ll need the following information: Potency percentage, Density of the suspension, and Volume of the liquid.

Let’s say you want to know how many mg are in a 50 ml bottle of ethanol tincture at 2% potency:

Potency Percentage = 2%
Density of ethanol* = 0.789 g/ml
Volume of liquid = 50 ml

Step One: Convert Density from g/ml to mg/ml:
0.789 x 1000 = 789 mg

Step Two: Multiply Density in mg/ml by Potency Percentage:
789 x 2% = 15.78 mg/ml

Step Three: Multiply mg/ml by Volume of liquid:
15.78 x 50 = 789 mg in 50 ml

For this example, let’s assume you’re putting .5 ml of infused MCT (liquid coconut oil) into capsules:

Potency Percentage = 3%
Density of MCT* = 0.955 g/ml
Volume of liquid = 0.5 ml

Step One: Convert density from g/ml to mg/ml:
0.955 x 1000 = 955 mg

Step Two: Multiply Density in mg/ml by Potency Percentage:
955 x 3% = 28.65 mg/ml

Step Three: Multiply mg/ml by Volume of liquid:
28.65 x 0.5 = 14.33 mg in 0.50 ml

Let’s say you’re planning to bake some edibles and want to know how many milligrams are in a tablespoon of butter with a potency of 0.5%.

Potency Percentage = .5%
Density of butter* = 0.911 g/ml
Volume of liquid = 15 ml (approximately 1 tablespoon)

Step One: Convert density from g/ml to mg/ml:
0.911 x 1000 = 911 mg

Step Two: Multiply Density in mg/ml by Potency Percentage:
911 x 0.5% = 4.56 mg/ml

Step Three: Multiply mg/ml by Volume of liquid:
4.56 x 15 = 68.4 mg in 15 ml (1 tbsp)

*Each suspension will have a different density. Here are some common ones.
Ethanol: .789 g/mL
Vegetable glycerin = 1.26 g/mL
Coconut oil = .926 g/mL
Olive oil = .915 g/mL
Safflower oil = .921 g/mL
Butter = .911 g/mL
MCT Oil = .955 g/mL
Honey = 1.43 g/mL
(Most oils have a density between 0.90 to 0.95)

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Bring your infused oils to The Good Lab for a Cannabinoid Potency Profile. We can help you figure out the milligrams per milliliter. Contact us to schedule a time to drop off your sample.

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10 thoughts on “ Marijuana Math: Calculating milligrams per milliliter in liquids ”

I have a question. I Have cannabis oil that is 29.2 mg/ml, with a net content of 30ml. According to my calculations if I made brownies I would have to cut them into about 24 pieces to make each piece @ 32 mg of THC. Am I close/

These are my calculations:
29.2mgx30=876mg.
876mg/24=36.5mg per piece.

Hi, I have some people telling me this math isn’t correct and now I’m extremely confused. My Remedy has tested at 13% CBD and I’ve infused 49 grams into 875ml of MCT oil. I calculated 124 mg CBD / ml of oil. Am I wrong?

49 grams = 49,000mg
49000×13% = 6370mg CBD
6370 / 875 = 7.28mg/ml CBD
This assumes no loss during processing and doesn’t factor in any change in density of the MCT after infusing.
The best way to know the potency for sure is to have it tested at a lab.

I initially infused 2 Cups of 151 everclear with 14g of flower @ 20% potency, I recently made FECO and reduced 1 1/4 Cup and ended up with 4ml, how do I figure out the potency per each 1ml? Thanks

14g of flower at 20% would be 2800mg. (14000 x 20%) There was likely quite a bit of loss during the process, so you won’t end up with 2800mg in the final batch. The only way to know for sure is to have it tested at a lab.

So I got a CBD oil. All it says on the package is “Contents contains equivalent of 0.4g of dried cannabis. Total THC per activation is 1.5mg. Total CBD per activation 25mg. Organic MCT.” and the front says “Total THC 1.5mg/g, Total CBD 28.2mg/g”

The bottle itself just says net weight 28.2g, doesn’t say how much fluid is in there.
It comes with a dispenser that takes up to 1mL at a time, and is broken up into tenths for measurement.

I’m assuming I can multiply 1.5mg times 28.2, to get 42.3mg of THC In the whole bottle I think? and 794.24mg of CBD?

But I’m struggling with converting. For the life of me I can’t figure out how many mg of THC and CBD are in, say, 0.1mL and 0.5mL and 1mL of oil. And as someone who’s pretty sensitive and has to keep my doses small (3-5mg of THC at a time maximum, so pretty much nearly microdosing), it’s really important that I know what I can take

That sounds like a very confusing label. It looks like the assumptions for your math are right. Chances are this is in a standard 1-ounce dropper bottle, which is about 30ml, at a weight of 0.94g/ml. I get 1.4mg of THC and 26.5mg of CBD in 1ml of oil. You should be able to calculate more accurately from there. Good Luck!

I’m just a little confused here. Can someone verify if my math is correct

i have 1g of RSO at 68% THC in 100ml of MCT oil

1g = 1000mg
1000x 68% = 680 THC
680 / 100ml = 6.8mg/ml THC

Your math is correct for figuring mg/g (68% = 680mg/g) Because RSO varies so much from batch to batch, I can’t answer the rest of your question. If you can tell me how much a milliliter of your RSO weighs, I might be able to help you more.

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