Decarb & edibles dosing
Estimate decarboxylation from oven time and temperature, then mg of THC per serving.
Material & recipe
Use THCA, not 'total THC'
Share extracted into butter/oil; 60–80% typical estimate
Check with an oven thermometer
Estimated dose
THC per serving (estimate)
20.5mg
Total THC in batch
409mg
Decarb converted
99%
Decarboxylation over time
How this is calculated
Dose
mg THC = g × 1000 × THCA% × 0.877 (decarb mass ratio) × decarb efficiency × infusion efficiency; per serving = total ÷ servings
- Efficiencies vary widely; home edibles are an estimate. Start low (≤2.5–5 mg) and wait 2 h before more. Not medical advice.
Decarboxylation
converted = 1 − e^(−k·t); k(T) = k₁₁₀ · e^(−Ea/R · (1/T − 1/383.15 K)); k₁₁₀ = 0.00183 s⁻¹, Ea = 88 kJ/mol
- Rate constants were measured on extract in a vacuum oven; plant material in a home oven converts more slowly.
- The model ignores THC loss to CBN and evaporation at long times or high temperatures.
Cited targets
From the genetics.guru grow library, in the units each source used. Grades: strong and moderate are peer-reviewed; community practice is untested.
THCA -> THC mass factordecarb0.877 multiplierStrong
molar mass ratio 314.47/358.48 = 0.8772
2 sources
THCA decarboxylation rate constant at 80 °Cdecarb · extract, vacuum oven0 s^-1Moderate
first-order; plant material slower
1 source
THCA decarboxylation rate constant at 95 °Cdecarb · extract, vacuum oven0.001 s^-1Moderate
THCA decarboxylation rate constant at 110 °Cdecarb · extract, vacuum oven0.002 s^-1Moderate
95% conversion ≈ 27 min (computed); paper reports THCA ≈ 0 at 30 min
1 source
THCA decarboxylation activation energydecarb · extract88 kJ/molModerate
CBDA 112, CBGA 109 kJ/mol; use with measured k at 110 °C as anchor
1 source
time for THCA to approach zerodecarb · extract, vacuum oven6–30 min (30 @110 °C, 9 @130 °C, 6 @145 °C)Moderate