THC Dosage Per Serving: How to Calculate and Choose the Right Dose

THC Dosage Per Serving: How to Calculate and Choose the Right Dose

Getting the THC dosage per serving right is the single most important skill in making edibles at home. Too little and you feel nothing. Too much and you spend six hours on the couch questioning every life decision you've ever made. The difference between a good edible experience and a bad one almost always comes down to dosing.

This guide covers the standard dosage formula, breaks down the dosage tiers from microdose to high-potency, and gives you the tools to calculate exactly what's in each serving of whatever you're making. Whether you're a first-timer targeting 5mg or an experienced user dialing in a specific dose, the math is the same.

Use our cannabis dosage calculator to run your numbers before you start cooking — it takes 30 seconds and saves hours of regret.

The Standard THC Dosage Formula

Every homemade edible dosage calculation starts with the same formula:

(grams of cannabis x THC% x 1,000 x 0.88) / number of servings = mg THC per serving

Let's break down each component:

• Grams of cannabis: The total weight of flower you're infusing, measured on a kitchen scale (not estimated by eye)
• THC%: The THC percentage of your strain, expressed as a decimal (20% = 0.20). Check your strain's lab results or dispensary label. You can also look up typical values in our Strain Library.
• 1,000: Converts grams to milligrams
• 0.88: The efficiency factor — approximately 12% of THC is lost during decarboxylation and infusion. No extraction process is 100% efficient. Some guides use 0.90 (10% loss), but 0.88 is a more conservative and realistic estimate for home cooking conditions.
• Number of servings: How many individual portions your recipe produces

Worked Example

You're making brownies using 7 grams of flower at 18% THC, and your recipe makes 16 brownies:

• 7 x 0.18 x 1,000 x 0.88 = 1,108.8mg total THC
• 1,108.8 / 16 = 69.3mg per brownie

That's a very strong dose — well beyond what most people need. To bring it down to a more reasonable 10mg per serving, you'd either need to use less flower (about 1 gram) or cut smaller servings (about 110 pieces from the same batch, which isn't practical).

This is why running the numbers before you cook matters. It's much easier to adjust your input amounts than to try to fix an overly potent batch after the fact.

A Note on Concentrates

If you're using concentrates instead of flower, the formula adjusts slightly. Wax, shatter, and distillate typically range from 60-90% THC. Use the same formula but with the concentrate's THC percentage:

• 1 gram of wax at 80% THC: 1 x 0.80 x 1,000 x 0.95 = 760mg total THC

The efficiency factor is higher (0.95) for concentrates because they're already partially or fully decarboxylated, meaning less is lost during processing.

THC Dosage Tiers

Not every edible needs to knock you sideways. Here's how different THC dosage ranges feel for most people, and who each tier is suited for.

Microdose: 1-2.5mg THC

The lowest effective range. At this level, most people report subtle mood elevation, mild stress relief, and slightly enhanced focus or creativity. You likely won't feel "high" in the traditional sense. This tier is popular with people who want functional benefits during their workday or social situations without impairment.

Best for: First-time users, daytime use, functional microdosing, people with low tolerance or sensitivity to THC.

Low Dose: 2.5-5mg THC

This is the standard "starter dose" recommended by most dispensaries and cannabis educators. Effects include noticeable relaxation, mild euphoria, and gentle pain relief. Most people feel a clear but manageable shift at this level.

Best for: Beginners, casual users, social situations, mild symptom relief.

Moderate Dose: 5-15mg THC

The 10mg mark is the legal standard single serving in most regulated markets. At this range, effects are clearly felt — stronger euphoria, altered perception of time, increased appetite, and more pronounced pain relief. Coordination and reaction time may be affected.

Best for: Regular users, experienced consumers, significant symptom relief, recreational use at home.

High Dose: 15-30mg THC

Strong effects that most casual users will find intense. Pronounced euphoria, significant alteration of perception, strong body effects, and potential for anxiety or paranoia in those not accustomed to this level. Not recommended for beginners under any circumstances.

Best for: Experienced users with established tolerance, significant medical needs, people who have previously found lower doses insufficient.

Very High Dose: 30-50mg+ THC

This range is exclusively for highly experienced users or specific medical patients. Effects are intense and long-lasting, often 8-12 hours. At this level, sedation is common regardless of strain type. The risk of an uncomfortable experience is significant for anyone without substantial tolerance.

Best for: Experienced users with high tolerance only. If you're reading a dosage guide, this tier probably isn't for you yet.

How to Measure Accurately

The biggest source of dosage inconsistency in homemade edibles isn't the formula — it's the measurements going into it.

Use a Digital Scale

Measuring cannabis by volume (tablespoons, handfuls) is unreliable. Different strains have different densities. A gram of dense indica nuggets takes up much less space than a gram of fluffy sativa buds. Always weigh your cannabis on a digital scale that reads to at least 0.1 grams. Kitchen scales cost under $15 and eliminate the biggest variable in your dosage calculation.

Know Your THC Percentage

If you bought from a dispensary, the THC percentage is on the label. If you're using homegrown or unverified flower, you'll need to estimate. Most mid-quality flower falls between 15-20% THC. Assume the lower end if you're unsure — it's always better to undershoot and take more later than to overshoot and have no recourse.

Check our Strain Library for typical THC percentages by strain name.

Distribute Evenly

When making a batch of edibles, the cannabis-infused base needs to be mixed thoroughly and distributed evenly across all servings. For cannabutter in baked goods, this means mixing the batter thoroughly. For gummies, this means keeping the mixture stirred as you fill molds. Inconsistent mixing is why one brownie might hit hard while another from the same batch does nothing.

Why Homemade Edibles Vary in Potency

Even with careful measurement, homemade edibles will never be as precisely dosed as commercial products tested in a lab. Here's why:

1. Decarboxylation efficiency varies. Oven temperatures are rarely perfectly accurate, and different parts of the oven heat unevenly. The actual THC conversion can range from 80-95% depending on your decarb method and accuracy.

2. Infusion extraction isn't complete. Not all THC transfers from the plant material into your butter or oil. Straining catches some but not all of the infused fat. The 0.88 efficiency factor is an average — your actual yield may be higher or lower.

3. Uneven distribution in the final product. Cannabis-infused fats don't always distribute perfectly through batters and doughs. Some servings will have slightly more or less than others.

4. THC percentage on labels isn't exact. Lab testing has its own margin of error, and the percentage on your dispensary label represents a sample, not necessarily the exact flower you purchased.

This is why the "start low and go slow" approach matters even when you've done the math carefully. Your calculation gives you a good estimate, not a laboratory-verified number.

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Tips for Consistent Dosing

• Batch-test first. Try one serving from a new batch and wait at least 2 hours before eating more. The onset time for edibles varies significantly between individuals.
• Keep a log. Record the strain, amount, THC percentage, recipe, servings, and your experience. Over time, this data lets you dial in your personal sweet spot. Track your batches in our recipe library.
• Use tincture for precision. Tinctures with known concentrations (mg/mL) are easier to dose precisely than infused butter or oil, especially for small-batch items like gummies.
• Cut servings smaller rather than larger. It's easy to eat two 5mg gummies to get 10mg. It's impossible to un-eat a 20mg gummy that's too strong.

Frequently Asked Questions

Q: How do I measure THC dosage accurately at home?

Start with a digital kitchen scale (0.1g precision) to weigh your cannabis, use the THC percentage from your dispensary label or strain lookup, and apply the formula above. For the most consistent results, use a tincture with a known mg/mL concentration rather than infused butter or oil. Our Dosage Calculator automates the math — just plug in your numbers.

Q: What factors affect how potent my edibles turn out?

The main variables are: accuracy of your cannabis weight, the actual THC percentage of your flower, how thoroughly you decarboxylated, infusion time and temperature, how well you mixed the infused fat into your recipe, and how evenly you divided servings. Controlling each of these steps gets you closer to your target dose.

Q: Why does the same dose feel different each time I take it?

Your body's response to edibles varies based on what you've eaten recently, your hydration level, sleep quality, stress, current tolerance, and individual metabolism. A 10mg edible on an empty stomach may feel significantly stronger than 10mg after a large meal. This is normal and is one more reason to start low and give yourself time before redosing.

Q: What's a good starting dose for someone who has never tried edibles?

Start at 2.5-5mg THC. This is the universally recommended beginner range across dispensaries, cannabis educators, and medical programs. Wait at least 2 full hours before considering a second dose — edibles take much longer than smoking or vaping to produce effects, and impatience is the number one cause of accidental overconsumption.

Dial In Your Dose

Every batch of edibles is an opportunity to get more precise. Use our Dosage Calculator before you cook, keep records of what works, and adjust from there. Browse what other Fellows are making in our community recipes for real-world dosing examples.

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