Introduction
Once you've decarboxylated your cannabis, the most important step before making edibles is calculating the THC content . Without it, every serving is pure luck. It's also the only way to determine the potency of your edibles without tasting them. Here you'll learn how to calculate the potency of your butters, oils, or syrups and how to derive safe serving sizes from total values.
Interactive THC calculator (for all bases)
1. Basic formula: Determining THC content
Total THC (mg) = Flower Amount (g) × THC% × 10
Example: 7 g cannabis × 20% THC × 10 = 1400 mg total THC.
For a butter with a final weight of 250 g, this results in: 1400 mg ÷ 250 g = 5.6 mg THC per g butter .
2. Take into account THC loss during processing
During extraction, 10-30% of THC is lost – due to heat, filtration, or residues in the plant material. Therefore, a safety factor should always be included in calculations.
Effective THC = Total THC × 0.75 (allow for approximately 25% loss)
Example: 1400 mg × 0.75 = 1050 mg of effectively usable THC.
Example 3: Calculating CannaButter
| parameter | Value |
|---|---|
| cannabis | 5 g at 20% THC = 1000 mg THC |
| Extraction loss | 25% → 750 mg effective |
| amount of butter | 250 g |
| Result | 750 mg / 250 g = 3 mg THC per g butter |
➡ A cookie with 10g of butter contains approximately 30mg of total THC.
4. Recommended target areas
- 2 – 5 mg = mild / beginner-friendly
- 5 – 10 mg = standard dose
- 10-20 mg = strong / experienced users
- 50 mg = advanced / medically relevant
Tip #5 for consistent dosing
Always stir your cannabutter or oil thoroughly before using it. THC binds to fat – but only an even distribution will ensure consistent doses per serving. The same applies to syrups and honey: stir thoroughly before each bottling or weighing.
6. Dosage in prescriptions
Knowing the THC content (in mg) of your base ingredient per gram allows you to adjust any recipe: A brownie with 10g of butter at 5mg THC per gram equals 50mg THC total. Dividing the brownie into five pieces means each piece contains 10mg THC – perfectly controllable and repeatable.
7. Conclusion
With these formulas and the THC calculator, you have complete control over your edibles. You not only know how strong your butter or syrup is, but you can also precisely plan and dose each serving. Combine the calculator with the article "Dosing Correctly" – then you'll know both how much you have and how much you need .
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