EU & Swiss Hemp Legal Total THC (0.2% / 0.3% / 1.0%) Calculator.
Compute statutory Total Stoichiometric THC (d9-THC + THCA x 0.877), CBD:THC ratio, expanded measurement uncertainty, and customs compliance across 0.20% (DE/ES), 0.30% (EU CAP/AT/FR/CZ), and 1.00% (Switzerland) thresholds.
EU & Swiss Hemp Legal Total THC (0.20% / 0.30% / 1.00%) & Customs Margin Calculator
Compute stoichiometric Total THC (d9-THC + THCA x 0.877), expanded measurement uncertainty (k=2), CBD:THC ratio, and legal compliance across 0.20% (DE/ES retail), 0.30% (EU CAP/AT/FR/CZ), and 1.00% (Switzerland) thresholds.
European Hemp Statutory Total THC & Stoichiometric Reference Table
| Starting Flower Weight | Raw THCA % | Total Raw THCA (mg) | Max Theoretical THC (0.877x) | Controlled PID + MCT Oil (~83% Net) | Open Kitchen Oven + Butter (~59% Net) | Per Serving (24 Portions) |
|---|---|---|---|---|---|---|
| 3.5 g (Eighth) | 18% THCA | 630 mg | 552.5 mg | 457.5 mg THC | 328.2 mg THC | 19.1 mg (PID) vs 13.7 mg (Oven) |
| 3.5 g (Eighth) | 24% THCA | 840 mg | 736.7 mg | 610.0 mg THC | 437.6 mg THC | 25.4 mg (PID) vs 18.2 mg (Oven) |
| 7.0 g (Quarter) | 20% THCA | 1,400 mg | 1,227.8 mg | 1,016.6 mg THC | 729.3 mg THC | 42.4 mg (PID) vs 30.4 mg (Oven) |
| 7.0 g (Quarter) | 22% THCA | 1,540 mg | 1,350.6 mg | 1,118.3 mg THC | 802.2 mg THC | 46.6 mg (PID) vs 33.4 mg (Oven) |
| 14.0 g (Half Ounce) | 22% THCA | 3,080 mg | 2,701.2 mg | 2,236.6 mg THC | 1,604.5 mg THC | 93.2 mg (PID) vs 66.9 mg (Oven) |
| 28.0 g (One Ounce) | 25% THCA | 7,000 mg | 6,139.0 mg | 5,083.1 mg THC | 3,646.6 mg THC | 211.8 mg (PID) vs 151.9 mg (Oven) |
Frequently Asked Engineering Questions
Under EU Regulation 2021/2115 and harmonised forensic GC/HPLC protocols, Total THC is never just neutral Delta-9 THC; it is calculated stoichiometrically as d9-THC + (THCA-A x 0.877) on a dried weight basis.
The European Common Agricultural Policy (CAP Reg. 2021/2115) and countries such as Austria and France apply a 0.30% Total THC field and wholesale ceiling, whereas Germany and Spain enforce a strict 0.20% Total THC limit for non-narcotic commercial hemp products, and Switzerland permits up to 1.00% Total THC.
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