Hello and welcome! This calculator does the cannabis math for you, so you can find the exact THC and CBD potency of your homemade edibles in just a few seconds. Start in Step 1 below by entering the details of your infused product, such as cannabutter or cannabis oil. This large batch can later be used in your recipe using the second section of this calculator.
If you’re not sure what information to put here, scroll down and read the How This Calculator Works section below.
📲 Step 1: Calculate Your Batch Potency
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Starting Amount of Cannabis Product in Grams
Enter the weight of the flower or product you infused, in grams.
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THC/THCA %
Enter the percentage from your product label, e.g. 15 for 15%.
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CBD/CBDA%
Enter the percentage from your product label, e.g. 5 for 5%. Leave 0 if none.
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Type of Oil or Alcohol Used
Pick what you infused into. This sets the absorption rate used in the math.
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Amount of Oil or Alcohol Used
How much oil or alcohol you used to make the full batch.
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Account for the loss associated with Decarboxylation?
Check this box if you decarbed your product and want to account for the natural loss associated with the process.
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Potency Results For The Entire Batch
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Total mg of THC
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2800
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Total mg of CBD
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700
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Total mg of THC per teaspoon
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29.17
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Total mg of CBD per teaspoon
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7.29
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How the two steps work together: Step 1 above tells you how strong your whole infusion is. Step 2 below splits that strength across the servings in your recipe, so you can see how much THC and CBD ends up in a single serving.
📋 Step 2: Dose Your Recipe
In this section, you can add the infusion or extraction you made in step one directly into any recipe.
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How much of your infusion does this recipe use?
How much of that batch goes into this specific recipe.
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Total Number of Servings In your Recipe
How many pieces or portions your recipe makes. Used to find the dose per serving.
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Potency Results Per Serving
Edibles can take 30–120 minutes to take effect.
Estimates only — actual potency varies with your ingredients and method.
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Total mg of THC in entire recipe
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145.83
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Total mg of CBD in entire recipe
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36.46
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Total mg of THC per serving
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14.58
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Total mg of CBD per serving
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3.65
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Please note: This calculator and the information on this page are provided for educational purposes only and are not medical advice. Results are estimates, not lab-tested values. Consult a qualified healthcare professional with any questions about cannabis use.
Table of Contents
How This Calculator Works
This calculator estimates potency using a few straightforward steps. First, it converts the THC and CBD percentages of your flower into milligrams, since one gram of flower at 1% THC contains about 10 mg of THC.
It then accounts for how efficiently your chosen fat or alcohol absorbs those cannabinoids during infusion, different bases (butter, coconut oil, MCT, alcohol, and so on) pull cannabinoids out of the plant at different rates, which is why the type you select changes the result.
If you check the decarboxylation box, it also factors in the natural loss that happens when raw cannabinoids convert into their active form.
Finally, it divides the total across your batch and then across the number of servings in your recipe, so you get an estimated milligram amount per piece.
Why Your Real Results May Vary
These numbers are careful estimates, not lab results. Real-world potency depends on things this calculator can’t see: the exact cannabinoid content of your specific flower, how thoroughly you decarboxylated, your infusion time and temperature, and how evenly everything is mixed into your final recipe.
Treat the result as a well-informed starting point rather than an exact figure.
How to Find Your THC Percentage
The accuracy of your estimate depends most on one number: the THC percentage you enter.
If you bought your flower from a licensed dispensary, this is usually printed right on the label or package, often shown as “Total THC.” If you’re working with flower that didn’t come with a label, you won’t know the exact figure — but most dried cannabis flower falls somewhere in the range of roughly 10% to 25% THC.
When you’re unsure, it’s reasonable to estimate toward the lower end, since underestimating potency is far easier to adjust for than overestimating it.
One quick measuring tip: your cannabis amount is entered in grams, and there are 28 grams in one ounce — so an eighth of an ounce is about 3.5 grams, and a quarter is about 7 grams.
A Worked Example
Let’s walk through a real batch so you can see how the numbers come together. Imagine you start with an eighth of an ounce of flower (about 3.5 grams) that tests at 15% THC, and you infuse it into 1 cup of coconut oil. You then use that entire batch of infused oil to make a recipe with 48 servings.
Here’s what the calculator does with that: the 3.5 grams at 15% works out to about 525 mg of THC in your flower. After accounting for how efficiently coconut oil absorbs cannabinoids, your finished batch of oil contains roughly 434 mg of THC total. Divide that across 48 servings, and each serving comes out to about 9 mg of THC — which the calculator labels “Mild.”
If you split that same batch into fewer, larger servings, each one would be stronger; into more servings, each would be milder. That’s the whole idea: the number of servings you choose is what sets your dose per piece.
Why You Will Love This Tool
Hello and welcome to my dosage calculator designed to help you estimate how much THC or CBD is in your edibles and homemade recipes.
If you’re like the members of my Well With Cannabis Community – chances are you love making your own cannabis-infused edibles!
Not only can you save money when you make incredible recipes at home, but you can also control the ingredients and strength of your edibles.
But how exactly do you determine the potency of your edibles?
If you know the cannabinoid content of your material and how many grams of weed you’ve used, you can use this handy edibles dosage calculator to do the math for you!
This edibles calculator will then help you determine your own edibles’ CBD or THC content based on the number of servings made.
Not only does this help you determine the THC potency of your homemade marijuana edibles, but it also helps you avoid a dose that is too high, which could result in unpleasant side effects.
Frequently Asked Questions
This is the hardest part for many people! If you purchased cannabis flower from a licensed dispensary, that flower should be accompanied by lab testing, which shows the percent of THC or CBD in the flower. Unfortunately, different labeling regulations do not make this information universal. If you grew your own cannabis at home, knowing the potency of THC or CBD will be impossible without lab testing. You can, however, research strain guides that provide a general idea of the total cannabinoids in a specific strain.
If you’re working with dried cannabis flower that has not been decarbed, you will be inputting the value as THCA and checking the checkbox to account for the loss of decarboxylation if you decarb. Suppose you are working with a prepared cannabis product that already has THC present because it has already been decarbed. In that case, you will enter the value as THC and not check the checkbox to account for the loss of decarboxylation (because it has already occurred). If you have both numbers, simply run the calculation twice, once for each option.
If your concentrate already comes with a milligram dosage on the label, you do not need to use this calculator. Simply divide the total THC milligrams by the final servings in the recipe you made. For example, if you have a concentrate labeled with 750mg of THC for the entire syringe and add that syringe to a cookie recipe that makes 24 cookies, you would use the following equation: 750/24 = 31.25mg THC per cookie.
Great question! We are using different values to account for extraction efficiency. For example, olive oil will have a different extraction efficiency than coconut oil. A fat-based product will have a different level of efficiency than alcohol, which is what we are trying to account for here.
If you’re calculating the THC or CBD dosages for a cannabutter recipe, it shouldn’t matter whether you use regular butter or unsalted butter. What will matter is the amount of butter you use.
Everyone is different, and this is general educational information rather than personalized medical advice. The right amount is unique to each person, since we all have endocannabinoid systems that affect our tolerance. If you have done the math above to calculate the total mg of THC but still feel unsure where to start, check out my guide to dosing edibles safely and effectively. Many people choose to start low and go slow, often beginning with the microdosing method — for example, some begin with a small amount such as 1-3 mg of THC and adjust from there. If you are feeling lost, you can also check out my beginner’s guide to using cannabis. If you want to know you’re consuming an exact dose, my most popular edible product, Micro Gummies, can help you get started.
A segment of the population reports feeling no effects from cannabis consumed in edible form or only when a very high dose is consumed. This can depend on a variety of factors, including your individual metabolism, what you’ve eaten, the decarboxylation process, and the potency of edibles consumed. If you do not feel the effects of edibles despite consistent doses and correct time intervals, check out this guide. Ultimately, you may need to explore more efficient ways to consume cannabis, such as cannabis-infused oil used as sublingual tinctures.
My goal in providing this calculator is that you can avoid consuming too high of a THC dose. Consuming too much THC is uncomfortable and can alter your ability to perform basic functions. Adverse effects may include dry mouth, racing heart, and even a panic attack. That is why it is important to exercise caution and use the right amount of cannabis before getting started. Seek professional medical advice if needed.
I have had requests for a topical dosage calculator and a tincture calculator. Still, this calculator here can work and is a great option for calculating total THC for both tinctures and topicals.
This calculator is for educational purposes only, but if you are looking for the best way to take your cannabis education to the next level, my Edibles Made Easy Course was designed for you! This course can transform any home cook into a cannabis chef in a few simple steps. Consider it your complete marijuana handbook for the kitchen!
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I make gummies for sleep. I can’t figure out the dosage part even with the calculator. I use your recipe
I made 3 cups of coconut oil with 60 grams of bud
I triple your recipe and make about 250 gummies (2 cups oil)
I decarb for 60 mins till chocolate brown to change to CBN
In this I also add 30 gummies that I Made with regular decarb and everclear
Formula for those is 30 grams of bud 2 cups everclear. I use 1 cup and take the alcohol out by heat and add the same amount of jello etc and thus makes 250 gummies
Each gummy is :5 tsp
Can you help me with calculating
Thank you
Ps your recipe is the best after trying many others
Hi Kathy. I can help, but do you know the strength of the cannabis you used? The percentage of THC? – We are so glad you love this recipe! Gummies can be finicky, but Emily’s recipe makes it so easy!
Hi! I am looking to make gummies from kief, but am having a horrible time trying to find an equation or calculator to determine how strong my gummies will be. Let’s assume I have 4 grams of kief derived from weed with an average strength of 19%. My gummy recipe makes 140 gummies consistently. I usually infuse 28g (1 oz) into 1/2 cup (1 stick) of clarified butter and each gummy comes out around 60mg/gummy. I want to try it with kief, but want to understand how to calculate the potencybefpre I do..
Thanks!
Hi Mark. Kief can be as potent as 70%, so you want to use a higher number as such for the THC% in the calculator. Are you infusing butter or adding directly to the gummies?
Emily, I come to you for advice on canna-math. I want to make my own cbd/thc tincture that I can infuse with reiki. So if I have a cbd 3.5 g and 7 grams of flower would that be a 1:2 ratio?
That is what I did with the 1:1 but what I want is where thc is higher than cbd for my nighttime use.
Hi Shaunna. Your math is accurate. ☺️
Can I use my cannabutter right away or does it need to be refrigerated first?
Hi Candy. There is no reason why you can’t use your cannabutter right away.
I just found your site and can’t stop reading. There is so much information! Thanks for that and the calculator is priceless. I do have a question though.
When making Canna-butter I use 7g of Shake at 20% THC for 2 sticks of butter. I am making 1 batch of cookies that needs 1 stick of butter and yields 24 cookies. How would I enter this into your calculator to figure out per serving?
Hi Eric. You can enter 7g @ 20% THC with 1 cup of butter. 1 stick of butter is 24 teaspoons, and you’ll have 24 servings. I’m calculating 22.73mg per cookie. Let me know if you get the same. Thank you so much for your support. Emily works hard to continuously improve the cannabis education she offers, and it’s always rewarding to receive such wonderful feedback.
I made green dragon 56 grams of flower 19% , I took 1 cup and evaporated alcohol and got 9- 1ml syringes of feco, how do I determine dosage per 1ml?
Hi Thomas. The total strength of your FECO is the same total as the potency results for the entire batch, which is 10,108mg. Divide that by 9, which gives you 1,123mg per 1ml syringe.
I use 10 gm for the chocolate with flower.
I use your recipe and the results are stupendous.
The calculator wont let me see all the amounts (infinity)
These recipes are good fun and are easy to create great results if you follow the directions.
5 out of 5
Hi David. We are so glad you love Emily’s recipes! If you send me a screenshot of your calculator results, I can help get that figured out.
Hello Emily. How can one determine the amount of THC in homegrown flower? I’d like to make cannabutter, tincture and other recipes of yours but have no idea how much to use. Thank you.
Hi Pamela. Without sending the flower off to a lab, there isn’t an accurate way of determining the strength. The breeder whom the seeds came from should have an estimated range of THC levels listed on the seed pack or on their website. I hope this helps!
So i was wondering how much Kief i would use in your green dragon recipe? I know the flower came out at 33% but not sure how potent the keif is.
Hi Shannon. Your kief is most likely around 70%, if not higher. We recommend starting with a gram, but it really depends on how strong you want your tincture.
Is there a limit to how much can be infused per tsp? I’ve seen some sources say ~40 mg is the ,most thc that coconut oil can hold and was wondering if people here had insight. I’d like to make these reeeeeeal strong (like, 80mg per tsp if not more) and “water down” if I need to, but want to make sure im not wasting time/bud, thanks!
Hi Kit. This is something we research on a regular basis and have yet to figure it out. At this time, there is no research or lab results that can answer this for us. You can make a small batch of the dosage you are looking for and see if it lives up to you expectations. Experimentation leads the way in thew cannabis world these days!
Hello! 1st off thank you so so much for providing such an educational and informative site to learn from! 2nd off I’m anxious because I do not want to mess up. Medical is very expensive here and anxiety added on to wanting to try and dip into edible making is like whoa! I was wondering and hoping you could answer some questions for me about this calculator and understanding dosage…. I have 3.5gms, I’d like to decarbe(im assuming it’s 225 degrees F for 35 minutes, please correct me if I’m wrong)flower it is 27.36%thca…it is 0.005% cbda….I would like to make 2 cups of alcohol I have 190 proof…so based off of inputting that info on the calculator I’ll have 797.82 mg of thc in the whole 2 cups of tincture whether I make green dragon or golden dragon…which do you prefer is easier for 1st timer?..is that too much alcohol for 3.5 gms?…I would like to eventually take this 2 cups (if able) of tincture and make cannasugar…how do I know how much sugar to tincture..how much will dosage be for the whole batch of cannasugar..and if possible what will dosage be per teaspoon? I would love to know how much sugar I’d drop into my coffee or lemonade. Thank you for your time! I pray one day I am able to make honey and all the amazing recipes you are sharing!!
Hi Maja! We’re so happy to be here to help you!
Ideal decarb is 240° for 40 minutes.
You only need enough alcohol to over the flower, but you can use as much as you would like. The more alcohol you have the less potent the tincture will be. Each tincture is rather simple to make, but the golden dragon doesn’t have as strong of a taste and/or smell like the green dragon does so many prefer starting with the golden dragon tincture.
You’ll want to use 1 cup of tincture for 2 cups of sugar. The total strength of the cannasugar will be the same as your tincture. You’ll want to take the total THC and divide by however many teaspoons of sugar you have to determine the strength of the sugar by a teaspoon.
I hope all this helps and makes sense!
Hi Emily
First time making my own edibles ?.
Trying to figure out the mg of each gummy.
In Step 2 of your calculator it asks how many teaspoons.
Teaspoons of what???
Hi Steve. Step 2 is asking for how many teaspoons of your infusion will you be using in your recipe.
So confusing even with dispensary grade weed I have 28 grams of gorilla with 24% THC 0% CBD and I’m infusing with 4 or 8 oz of MCT oil ( not sure yet if I’m making half with butter and half with MCT oil yet ) and will make roughly 80 gummys with half of my 28 grams in oil and want to use 14 grams for butter to cook and put on food and I keep getting a much lower number than I expected What am I doing wrong ?
Hi Jenai. Let’s start with the oil, as I don’t know how much butter you are infusing. If you infuse 4oz (0.5 cups) MCT oil with 28 grams of 24% decarbed cannabis, you will have a total THC content of 5304.10mg which is 221mg per teaspoon. If you plan on using half (2oz/12 teaspoons) of the oil to make 80 gummies, your total batch of gummies will be 2652.05mg, which is 33.15mg per gummy. Is this comparable to the numbers you figured??
Totally confused 🙂 the flower is about 15% THCA and I wanna infuse butter to make fudge for 36 pieces at 10mg if that possible . So how much flower to butter do I use if the recipe calls for 2 Tbs butter
Or what would i enter into the calculator ? The cups entry throws me off
Hi Heather. You’ll need to infuse a quarter cup (half stick) of butter and then use 6tsp (2tbsp) of that for your recipe.
6.25 grams of flower with a half stick of butter will get you your desired results. I’ve copied the calculator results below.
STARTING AMOUNT OF CANNABIS PRODUCT IN GRAMS – 6.25
THC/THCA % – 15
AMOUNT OF OIL OR ALCOHOL USED IN CUPS – 0.25
DECARB LOSS – YES
TOTAL MG OF THC – 730.60
TOTAL MG OF THC PER TEASPOON – 60.88
NUMBER OF TEASPOONS USED IN YOUR RECIPE – 6
TOTAL NUMBER OF SERVINGS IN YOUR RECIPE – 36
TOTAL MG OF THC IN ENTIRE RECIPE – 365.30
TOTAL MG OF THC IN PER SERVING – 10.15
I hope this helps!
Hi Emily. Love the calculator. I have it bookmarked for all of the batches that I am making. Just a quick question–what about infusion with honey? I don’t see it in the drop down menu. Would it be just the same as any oil or high proof alcohol? Thanks!
Hi Brian! When infusing honey, you are adding in the cannabis product, but not straining anything out as you would for other infusion processes. The strength of the honey becomes total strength of the cannabis product you added in. When using the calculator, you’ll want to select ‘No Oil or Solvent Used’.