The top pick is Eden Cannabis's concentrate dosage calculator. Judge any calculator, including this one, on four criteria: total THC conversion, package weight and serving math, delivery method, and a target-dose input that supports low-and-slow use. A concentrate dosage calculator turns product weight and potency into estimated milligrams of THC per dose, then compares that estimate with a target dose you choose. Treat the result as a planning estimate, not a guarantee of effect or a medical recommendation.
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Top pick: Eden Cannabis concentrate dosage calculator
The Eden Cannabis calculator is the pick for shoppers who want to compare a concentrate label with a practical dose estimate. Use the checklist below to confirm that it, or any alternative, handles the inputs that matter.
Pros
- Keeps label math, serving count, and target dose in one workflow.
- Makes it easier to compare a new concentrate with a product you already know.
- Supports batch planning for edibles and tinctures made from concentrate.
Cons
- Cannot measure how much THC your body actually absorbs from a vape, dab, or edible.
- Depends on label accuracy, your scale, and your own tolerance history.
Use-case recommendation: choose this style of calculator when you are portioning a concentrate into edibles, tinctures, or a multi-serving batch and need a label-based estimate per serving.
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Criterion 1: Total THC conversion, not label THC alone
Total THC is not the same as the THC number printed on the front of many concentrate labels. THCA is the acidic form found in raw cannabis, and it converts to THC with heat. The common label math is total THC = THC + (THCA × 0.877). A calculator that ignores THCA can understate potency on products labeled mostly as THCA.
Pros
- Gives a more realistic potency estimate for concentrates that list THCA.
- Makes label comparison easier across shatter, wax, budder, and live resin.
Cons
- Requires you to read the full label, not just the large THC percentage.
- Still depends on the lab result and the product's moisture or consistency.
Use-case recommendation: pick a calculator with a THCA field for any concentrate that lists THCA separately. If the label already states total THC, enter that number and skip the conversion.
Criterion 2: Package weight and serving math
Serving math is where most concentrate estimates go wrong. First find total THC in the package: grams × 1,000 × total THC percentage ÷ 100. Then divide by the number of servings you plan to make. For example, 1 gram at 80% total THC contains about 800 mg THC by label math. Divided into 100 servings, that is about 8 mg per serving. A 0.05 gram dab at 80% contains about 40 mg THC by label math, before accounting for inhalation losses.
Pros
- Turns a bulk concentrate purchase into a repeatable per-serving number.
- Works for tinctures, oils, butter, and gummies when you know the batch size.
Cons
- Concentrate serving sizes are not standardized, so you must define your own.
- Small weighing errors create large dose errors with high-potency products.
Use-case recommendation: use serving math for homemade edibles and tinctures. Do not assume one dab equals one serving.
Criterion 3: Delivery method and device efficiency
Delivery method changes the estimate. Inhaled concentrates lose some THC to heat, device design, exhale, and residue. Oral cannabis made from concentrate goes through digestion and liver metabolism, and effects can take 30 minutes to 2 hours to appear. A calculator can estimate THC in the product, but it cannot predict absorbed dose or onset time for every person.
Pros
- A delivery-method field prevents you from using an edible estimate for a vape.
- Prompts decarboxylation planning when you cook with THCA-rich concentrate.
Cons
- Device efficiency and inhalation technique are not in the label.
- Edible effects vary with food, metabolism, and tolerance.
Use-case recommendation: choose a calculator that separates inhaled and oral use. For edibles, decarboxylate first and dose by the finished batch, not by the raw concentrate.
Criterion 4: Target dose and tolerance input
A target-dose input is the safety feature that matters most. The CDC advises starting with a low dose and waiting before taking more, especially with edibles. A calculator should let you enter a target milligram amount below your usual limit, then show how many servings or portions that target allows. It should not push you toward a fixed dose based only on potency.
Pros
- Encourages a low first test and a wait period before redosing.
- Helps you compare a new concentrate with a product you already know.
Cons
- Tolerance and body chemistry are personal and not captured by a formula.
- A target dose from someone else is not a safe starting point for you.
Use-case recommendation: use the target-dose field as a ceiling, not a goal. If you have no tolerance history with concentrates, start well below the calculated serving and wait before increasing.
How to use a concentrate dosage calculator
- Read the full label and note package weight, THC, THCA, and total THC if printed.
- Convert THCA to THC with the 0.877 factor, or use the label total THC.
- Enter grams, total THC percentage, and the number of servings you will make.
- Set a low target dose and calculate milligrams per serving.
- Weigh portions carefully, label the batch, and wait before redosing.
A calculator is a label translator, not a lab test. Store concentrates away from heat and light, keep the original label, and record your batch math so you can repeat a portion that worked for you. This guide is general information, not medical advice.