For a first edible, take 1 mg to 2.5 mg of THC and wait at least two hours before taking more. Most legal gummies sold in the United States contain 10 mg of THC per piece, so you will cut that piece into quarters or eighths to reach the target range. A 10 mg gummy cut into four equal parts gives 2.5 mg per part. Cut into eight, it gives 1.25 mg per part. The two-hour wait matters because edible THC passes through the liver, and onset can take 30 minutes to 2 hours with peak effects near hour 3.
cannabis gummies dosage calculator
Prerequisites
- The package label showing total THC per package and total piece count
- A sharp knife, pill cutter, or kitchen scale
- A clean cutting surface
- A notebook or phone note for a dose log
- A three-hour window when you do not need to drive
Steps to Determine Your Dose
- Read the label. Find total THC in milligrams for the package and the number of pieces. Divide total THC by piece count to get mg per piece. Note the CBD content and any added cannabinoids such as CBN or CBG.
- Confirm the piece size. If the gummies vary in weight, weigh one piece and the whole package on a kitchen scale. Use this formula: mg THC in your piece = (piece weight / package weight) x total THC in the package.
- Cut the piece down to your target dose. For a 10 mg gummy, 2.5 mg is one quarter and 1.25 mg is one eighth. Chill the gummy before cutting to reduce sticking and smearing, which can leave uneven spots in one piece.
- Take the dose with a glass of water. Note whether you ate beforehand. Food in the stomach can delay onset and soften the peak. An empty stomach can bring effects on sooner.
- Write down the time, the dose in mg, and what you ate.
- Wait two hours before you judge the dose. Do not take a second piece at the 45-minute mark because nothing seems to be happening. That is how most rough edible experiences start.
- At the two-hour mark, rate how you feel from 1 to 10. If the effect is weak and you want more, add 1 mg to 2.5 mg, not a whole piece.
- Repeat the process on a separate day. Change one variable at a time so you learn what your body does.
- Set your steady dose once you find the amount that gives the effect you want for 3 to 4 hours without discomfort. Keep that number as your baseline for that product and brand.
Dose Ranges by Experience
- First time or low tolerance: 1 mg to 2.5 mg THC
- Occasional use, a few times a month: 2.5 mg to 5 mg
- Regular use, several times a week: 5 mg to 10 mg
- Daily use with high tolerance: 10 mg to 30 mg, and higher in some cases
The 10 mg serving is the legal standard in states with regulated markets. It is a reference point, not a goal. A person who has used edibles for years may need 20 mg or more to feel what 2.5 mg produces in a new user.
What Changes Your Dose
Body weight gets attention, but tolerance, liver enzyme activity, and metabolism play a bigger role. THC is converted in the liver by enzymes in the CYP450 family, including CYP2C9 and CYP3A4, and genetic differences in those enzymes shift how strong and how long an edible feels. Other drugs that use the same enzymes, among them some antifungals, antibiotics, and antidepressants, can change the effect. CBD can also slow THC metabolism, so a 1:1 gummy may feel different from a THC gummy at the same milligram count. Body fat matters because THC is stored in fat tissue, which can stretch out the tail end of the high. Hydration, sleep, and a fatty meal also shift the experience.
When a Dose Is Too High
Signs of too much THC include a racing heart, anxiety, nausea, dizziness, and a sense of losing control. These effects are uncomfortable but not dangerous for most adults. Sit down, drink water, and remind yourself that the feeling will pass. Skip caffeine and alcohol. Do not drive or operate equipment. If you take prescription drugs or have a heart condition, call a doctor or poison control when symptoms concern you.
Track Your Doses
Log four fields for every session: dose in mg, time taken, time of onset, and duration. After six or eight entries you will see your pattern. Bring that log to a dispensary and a budtender can point you to products that match your numbers instead of guessing.