What a cannabis dosing calculator does
A cannabis dosing calculator turns product potency into milligrams of THC per serving. You enter the THC percentage from the label, the total weight or volume of the package, and the number of servings it holds. The calculator returns the milligrams of THC in each serving and, once you enter a target dose, the amount of product that delivers it. The core math stays simple: total milligrams of THC equals product weight in milligrams times THC percentage divided by 100.
Before you start
- Product label showing THC percentage (and CBD percentage, if listed)
- Total package weight or volume
- Number of servings per package, or the labeled serving size
- A target dose in milligrams of THC
- A scale, syringe, or dropper that matches the product form
If you are new to cannabis, a starting point under 10 mg of THC is common. Many states treat 10 mg as one recreational edible serving, and public health agencies suggest starting below that.
cannabis microdosing calculator
Steps
- Read the THC percentage printed on the label and write it down. Use the total THC figure if the label lists THCA separately.
- Record the total weight or volume of the package.
- Find the number of servings the package contains. If the label only gives a serving size, divide the total weight or volume by that serving size.
- Convert the package weight to milligrams if the calculator asks for milligrams. One gram equals 1,000 milligrams.
- Choose your target dose in milligrams of THC. Keep the first dose low, particularly with edibles.
- Open the calculator and select the product type: flower, edible, tincture, or concentrate.
- Enter the THC percentage in the potency field.
- Enter the total package weight or volume.
- Enter the number of servings.
- Enter your target dose in milligrams of THC.
- Read the output: milligrams of THC per serving and the amount of product that matches your target dose.
- Translate that result into a practical measure, such as grams of flower, milliliters of tincture, or a fraction of an edible piece.
- Record the dose, the time, and the effects. Use the record to set the next session.
Reading the result
Two numbers matter. Milligrams per serving tells you the strength of one labeled serving. The target dose line tells you how much of the product to take. When those two numbers disagree, trust the target dose line and measure the product instead of eyeballing it. Check that the units in the results match the units on your scale or dropper before you consume anything.
Adjusting your dose
Change one variable at a time. Raise or lower the target dose field and note how the amount of product shifts. Keep the increment small, since a two milligram change in an edible can feel much larger than the same change in inhaled flower. Inhaled effects arrive within minutes, while edible effects can take 30 minutes to two hours, so wait before you re-dose. The CDC notes this delay is the main reason people consume more THC than they intended.
Common mistakes
- Entering package weight in grams when the calculator expects milligrams
- Confusing THC percentage with total milligrams of THC
- Using whole package weight as a single serving
- Assuming THC is spread evenly through homemade edibles
- Re-dosing before the first edible dose takes effect