CANNABIS OIL POTENCY CALCULATOR
Now Make the Recipe
Use this Cannabis oil potency calculator to estimate the THC strength of homemade Cannabis-infused oil made with flower or concentrates. See total THC, THC per ounce, tablespoon, teaspoon, and milliliter.
Cannabis Oil Potency Calculator
Example Calculation
If you infuse 14 grams of 20% THC flower into 8 ounces of finished oil at 80% infusion efficiency, the estimated total THC is 2,240 mg THC.
That equals approximately 280 mg THC per ounce, 17.5 mg THC per tablespoon, and 5.8 mg THC per teaspoon.
THC Oil Dosage Guides
THC Oil Strength Guide
Suggested Serving Sizes
Start low and increase slowly, especially with homemade cannabis oils. Effects can take longer to appear when swallowed compared to inhaled cannabis.
Related Resource
Free Cannabis Craft Starter Guide
Learn how to make cannabis oils, salves, and gummies with beginner-friendly recipes, dosage charts, equipment recommendations, and potency tips.
Download the Guide →How to Make Cannabis Infused Oil
Cannabis infused oil is one of the easiest homemade cannabis recipes and can be used for edibles, capsules, salves, lotions, massage oils, and more.
Simple Cannabis Infused Oil Recipe
Ingredients
- 14 grams cannabis flower
- 1 cup MCT oil, coconut oil, olive oil, or avocado oil
- 1 teaspoon sunflower lecithin, optional
Equipment
- Baking sheet and parchment paper
- Double boiler, slow cooker, or infusion machine
- Fine mesh strainer or cheesecloth
- Glass jar or dropper bottle
Step 1: Decarb the Cannabis
- Preheat oven to 240°F.
- Break cannabis into small pieces.
- Spread evenly on a parchment-lined baking sheet.
- Bake for 35–40 minutes.
- Let cool completely before infusing.
Step 2: Infuse the Oil
- Add decarbed cannabis and oil to a double boiler or slow cooker.
- Heat gently between 160°F and 180°F.
- Infuse for 2–4 hours, stirring occasionally.
- Avoid overheating or boiling the oil.
Step 3: Strain and Store
- Strain through cheesecloth or a fine mesh strainer.
- Pour into a clean glass jar or dropper bottle.
- Store in a cool, dark place or refrigerate for longer shelf life.
Ways to Use Cannabis Infused Oil
- Homemade gummies
- Cannabis capsules
- Brownies and baked goods
- Salves and lotions
- Massage oils
- Food recipes and dressings
Recommended Supplies
Straining Supplies
Storage Containers
- Amber Glass Dropper Bottles
- Mason Jars
- Glass Storage Bottles
- Silicone Funnels
Equipment
Disclosure: As an Amazon Associate, I earn from qualifying purchases at no additional cost to you.
Frequently Asked Questions
How accurate is this cannabis oil calculator?
This calculator provides an estimate based on the amount of cannabis used, THC percentage, finished oil volume, and infusion efficiency. Actual potency can vary depending on decarboxylation, infusion method, straining, and the accuracy of the THC percentage entered.
What types of oil can be used for cannabis infusions?
Many oils can be used for cannabis infusions, including coconut oil, MCT oil, olive oil, avocado oil, grapeseed oil, sunflower oil, and other food-safe carrier oils.
How many mg of THC are in one ounce of cannabis oil?
The THC per ounce depends on how much cannabis you used, the THC percentage, infusion efficiency, and how many ounces of finished oil you made. Enter your recipe details above to calculate the estimated THC per ounce.
Can I use concentrates instead of flower?
Yes. Select “Concentrate” from the dropdown and enter the concentrate weight in grams and THC percentage. This can be used for distillate, RSO, FECO, rosin, live resin, and other cannabis concentrates.
Why is my homemade cannabis oil weaker or stronger than expected?
Homemade cannabis oil can vary because of flower quality, concentrate potency, decarboxylation, infusion time, temperature, straining loss, and how much finished oil remains after the process.
Should I add sunflower lecithin to cannabis oil?
Sunflower lecithin is optional but commonly used when making cannabis-infused oil and edibles. It helps oil blend more evenly into recipes such as gummies, chocolates, and baked goods, reducing separation and improving consistency. Many cannabis makers also believe lecithin may improve cannabinoid absorption, although it does not increase the actual THC or CBD content of the oil.
Disclaimer
This calculator is for educational and estimation purposes only. It does not provide medical, legal, or dosing advice. Always label homemade cannabis products clearly and keep them away from children and pets.