Maker Label Studio | Food & Beverage

Cannabis Total THC & Per-Serving Calculator

Estimate total THC, optional total CBD, batch potency, and per-serving label values using the 0.877 decarboxylation factor.

Cited standard/category: Food & Beverage.
Total THC (%) = THCA% x 0.877 + delta9-THC%; total CBD (%) = CBDA% x 0.877 + CBD%.

Inputs

Enter lab potency as percent by weight, then define the infused batch and serving count.

Results

Use mg/g for flower. Use mg/serving for infused Food & Beverage labeling after applying yield.

Total THC - THCA x 0.877 + delta9-THC
THC potency - Total THC% x 10
THC in batch - mg/g x batch mass x yield
THC per serving - Batch total divided by servings

Label Table

Label item Calculation Value

All estimates depend on the lab inputs, batch mass, and yield assumption. The 0.877 factor converts THCA or CBDA to the neutral cannabinoid mass equivalent after decarboxylation.

Self-Tests

Run golden checks against the pure calculation functions used by the calculator.

Self-tests: not run

About the Cannabis Total THC & Per-Serving Calculator

Manufacturers, labs, and product developers can use a cannabis total THC worksheet to translate certificate-of-analysis values into total THC, milligrams per gram, package potency, and per-serving strength. The calculation accounts for THCA decarboxylation using the common 0.877 conversion factor, helping teams sanity-check labels, recipes, and serving plans before jurisdiction-specific limits are applied.

How it works

  1. Enter delta-9 THC and THCA results from the lab report.
  2. Confirm whether values are reported as percent, milligrams per gram, or total milligrams.
  3. Add package weight or serving count for edible or packaged products.
  4. Review total THC, milligrams per gram, and milligrams per serving.
  5. Compare the result with the rules in the product's sale jurisdiction.

Frequently asked questions

Why is THCA multiplied by 0.877 in total THC calculations?

The factor adjusts for the mass lost when THCA decarboxylates into delta-9 THC. Total THC is commonly estimated as delta-9 THC plus THCA multiplied by 0.877.

Can the same potency result be used for every cannabis market?

No. Testing rules, serving limits, rounding, and label formats vary by state or country. Use the calculator for math, then check the applicable cannabis control rules.

What is the difference between milligrams per gram and milligrams per serving?

Milligrams per gram describes concentration in the product. Milligrams per serving uses the total potency and the number or weight of servings to estimate consumer-facing dose.

Should I use pre-decarboxylation or post-decarboxylation lab values?

Use the values and reporting basis required by the governing program or the product specification. If the certificate already reports total THC, avoid adding THCA again.

References