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’ve used your dosage calculator for about a year now. I used to be able to use decimals. Since September, I cannot use decimals. I had some friends try too and they are unable to use a decimal too. We’ve done everything my IT guy said to do and it is still not letting the use of decimals. He said to contact you. Thank you for your time. Your website is the best!
Hello RJ – I apologize for the inconvenience! Our tech team is currently working to fix this, and I hope it will be resolved soon ?
Just picked up some keif from the dispensary and I want to make some cannabutter. It’s 4 grams, 45.17 THC, .17 CBD
How long and what temperature for decarboxylation ?
I thinking a pound of butter ?
Hello Ed! I have a full guide for how to decarb kief here and other guide for how to make kief butter here. I hope this helps!
I am using ground cannabis and melted chocolate. How do I figure dosage? 7 grams cannabis at 13.33%thc my chocolate bar mold is five bars of 12 pieces each. I made 5.5 bars.
Hey Susan, you can input the 7 grams and 13.33% THC in the calculator = 933mg THC. For your servings, simple multiple 12×5.5= 66 total servings. Then divide 933mg THC / 66 servings = 28.3mg THC per serving. I hope this helps!
Hi, could you make this RSO friendly? I use 1 teaspoon 1G. I get 60 capsules at 80.16 THC. This calculator is the best but tiny batch not so good. I’d really like to keep using this but it doesn’t work for 1 teaspoon ?
Hey Alli. In most cases, you don’t need to use this calculator for RSO (unless you’re making it yourself). Are you purchasing the RSO? Does it come with a total mg on the package? If so, you simply need to divide that number by your total number of servings to get a final dosage.
How much alcohol mixture do I need for 10 pounds sugar
Hey Anita, you will need to do the math and determine how strong you want your final product first. Then put that amount of cannabis into the tincture before making the sugar.
I used the instant pot to infuse coconut oil. Worked great can I infuse 58 grams of canabis into one cup of oil to make it more potent?
Hey John, if you can get the oil to cover the plant matter completely, you should be good to go 😀
Hello! This is my first attempt at making FECO. The strain I am using has 22% THC, 0.026% CBD. I’d like to start with 1/2 cup of Everclear to 0.5 grams of cannabis flower. Would that yield 4.17 mg per serving (teaspoon)?
Hey Chrissy! When I input these values into the, I got: 3.82mg of THC per teaspoon 🙂 I checked the box to account for the loss associated with decarboxylation.
Hi Emily,
First I would like to thank you for creating this space and offering guidance. Your dosing calculator is very helpful. Is the “number of teaspoon used in your recipe” the number of butter used?
Hey Emma, thanks so much for your kind words and thank you for being a part of this space. Yes, the “number of teaspoons” would be the amount of butter used in a recipe, like cookies or brownies for example. If you used 1/2 cup of that cannabutter in a recipe, that would be 24 teaspoons. I hope this helps 😀
I tried to use the edibles dose calculator but I’m not sure how to use it the concentrate I have. I was going to try your chocolate recipe. I would love to know how to make it so each piece chocolate has about 20mg THC in it.
So with this info on my RSO what # do I plug into your calculator
Purpalex RSO T866 I 16254 [1mL]
CTPharma
RSO Syringe
Details
THC 54.55% CBD 0.17% THCa 32.06% CBDa 0.23%*
*This % may represent an aggregate of THC/CBD, THCa/CBDa, THCb/CBDb within the product. Consumers should review the actual product label for exact % of THC/CBD.
Description
This 1mL of indica whole plant extract contains a total THC of 86.61% (or 866mg)
Uses 3.48g of allotment
Total Terpenes: 2.98%
a-Pinene: 0.03% Camphene: 0.01% ß-Myrcene: 0.04% ß-Pinene: 0.02% Limonene: 0.08% Linalool: 0.22% ß-Caryophyllene: 0.61% a-Humulene: 0.24% cis-Nerolidol: 0.23% trans-Nerolidol: 1.44% a-Bisabolol: 0.06%
Hey Dom, luckily, they give you the answer on the package; the 1mL syringe contains 866mg of THC. If you wanted chocolates at 20mg of THC, say a teaspoon each, you would need to melt the entire syringe into approximately 43 teaspoons of melted chocolate (866/20=43.3). This would be about 1 cup of melted chocolate. I hope this helps!
you stated to commenter “DC” on June 22, 2022 that you could use decimals with the online calculator but when you input a decimal the calculator backspaces it out – you cannot use decimals – this would be a great addition to this already great tool
Hey Bob! Thanks so much for bringing this to my attention. It looks like it’s a browser compatibility issue with Chrome. I have the tech team working on the issue, but in the meantime, you can successfully use the decimal function on Safari 🙂
Hi Emily,
I am completely new to making my own edibles. I just did a trial run without any THC with your recipe I made 48 pieces that were about 1 teaspoon each and 48 that were about 2 teaspoons. I’ve read this and tried using the calculator but I am still confused. I am having a hard time figuring out how much flower to use to infuse my coconut oil. Ideally I would like them on the stronger side 15-25mg each. What do you recommend?
Hey Karina. If you have 48 pieces and you want them (average) 20mg each, you’ll need 960mg THC to start (48×20=960). Next, you will need to know the % THC in you’re starting material. If you don’t know that, an average number I will use for this example is 15% THC. At 15% THC, you will get 150mg THC per gram, so you will need 6.4 grams of flower (960/150) to get to your desired amount of 960mg THC total. I hope this makes sense!
Hi when calculating CBG do input that into the CBD section or THC section of the calculator.
Thanks,
JB.
Jburnz, you can use either one 😀
Hi Emily,
I really liked your website and the calculator, it is very helpful.
I smoke regularly for 10 years about 0.16 grams a day.
I was told that you have to multiply by 4 the amount you smoke to know the amount of weed you put in a brownie.
is it true? Because according to the calculation I wrote later, it sounds like it’s a lot.
I want to make brownies for the first time for me and my friends (we all smoke regularly).
I’m trying to figure out how many grams to put for 9 people.
Our cannabis 0.1 >CBD
THC 24.3%
If I use 2 grams and make 9 brownies according to the calculation, I got 420 mg of THC
Divide into 9 brownies, this is 46 mg per piece.
Is 46 mg too much for one person?
10 mg sounds too little to us for a brownie, maybe we’ll make 20 brownies from the 2 grams and if we need it after two hours and feel it’s weak we’ll eat another piece.
I’d be glad to hear your opinion 🙂
Hey Shirkhan, thanks so much! I’ve actually never heard that before; this is new to me. From everything I understand, your tolerance for smoking has no correlation for your tolerance for edibles. This is because when you smoke, your body is processing THC, but when you consume edibles, your liver is converting THC into 11-OH-THC, which is a totally different animal. All bodies convert differently because of our unique digestive systems, digestive enzymes, and endocannabinoid systems. So my recommendation for ALL consumers is always to start low, with 5-10mg to start. This will allow you to gauge how you feel, without over consuming. Not saying that 46mg may not be a perfect place for you eventually, but it could be too much, and you don’t want to feel unwell by accidentally overconsuming. I hope this helps!
This calculator just might have saved me a really rough night. I wanted to make my pain creme a little stronger and then use the rest of the coconut oil to make brownies. I used 30grams of flower that was about 15% thc and I am glad I used this calculator so I can now cut them into 24 pieces, 12 pieces per batch might have put me in a coma.
I am so glad to hear this calculator helped save you, Costanza!
Hey Emily!
I’ve been making tincture with 151 proof ever clear. My state doesn’t selling 190 proof. Will that affect the potency? Also I have been buying shake from my dispensary, will that also affect the potency? Thank you!
Hey Adam! I don’t have lab tests to compare 190 vs 151 proof, but I think you should be just fine – many people use 151. Also, shake may actually be more potent, so hopefully that helps!