Edibles Dosage Calculator
Estimate the THC per serving in your homemade edibles. Enter your flower, THC percentage, efficiencies, and servings to see an instant, private estimate.
How much THCA converts to THC when you heat the flower.
How much of that THC actually transfers into your butter or oil.
Potent. Best for experienced cooks — consider smaller servings.
These are estimates, not lab values. Not medical or dosing advice. Start low, go slow.
Put it to work on a recipe like our classic cannabutter or browse all recipes.
Frequently asked questions
How many milligrams of THC should a beginner start with?
Many people start with 2.5 to 5 mg of THC. Have a single serving, wait at least two hours, and only then decide whether to have more. Start low and go slow, every time.
How do I calculate THC in homemade edibles?
Multiply your flower weight in grams by its THC percentage, then by 1000, to get the milligrams of THC in the flower. Multiply by your decarb efficiency and infusion efficiency to estimate how much makes it into the food, then divide by the number of servings. This calculator does the math for you.
What do decarb and infusion efficiency mean?
Decarb efficiency is how much THCA is converted to active THC when you heat your flower. Infusion efficiency is how much of that THC actually transfers into your butter or oil. Both are less than perfect in a home kitchen, which is why estimates use values below 1.
Why did my edibles feel stronger or weaker than expected?
Home potency varies batch to batch with your flower, your decarb, and your infusion. Treat every number here as an estimate, not a lab value. Make a small test batch, label its strength, and adjust from there.
How long do edibles take to take effect?
Edibles commonly take 30 to 120 minutes to take effect, and the feeling can keep building. That delay is exactly why you should wait a full two hours before considering a second serving.
More free tools
All 16 toolsWhat's My Starting Dose? Quiz
Five questions, one conservative milligram number to start from, and three recipes that suit it.
Infusion Potency Calculator
Work out the strength of your cannabutter or infused oil before you cook with it.
Edible Onset Timeline
See when your edible should kick in, peak, and wear off based on dose, stomach, and experience.
Decarb Time and Temperature Guide
Find the right time and temperature to activate your flower before infusing.
Watch the 30-second version
All videosRecipes that use this
Free original recipes where this calculation matters.
Classic Cannabis Brownies
Fudgy, deeply chocolatey, and reliably dosed. The edible everyone pictures, done properly.
Infused Chocolate Chip Cookies
Chewy in the middle, crisp at the edge, and portioned for steady dosing one cookie at a time.
No-Bake Infused Peanut Butter Cups
Dark chocolate shells with a peanut-butter centre dosed through infused coconut oil. Freezer-set, no oven, and identical cups every time.
Read next
The guides and quick reads behind the numbers.
Save your calculations and track every dose
Run the numbers on the go, log doses as you cook, and scale any recipe to your batch size in the Canabee app. Free to start.