Decarboxylation tracker
Record vessel weight over time and inspect apparent CO2-based conversion.
Mass-loss results are theoretical CO2-only estimates. Volatiles, transfers, and balance drift can affect the reading.
Calculation method Equation, inputs and limitations
How progress is inferred from weight
Each THCa molecule that decarboxylates forms one CO2 molecule. When that gas leaves a vented system, the measured mass can decrease by a known fraction of the starting THCa mass (the CO2 mass ratio, approximately 12.277% of THCa mass). Dividing observed weight loss by expected maximum CO2 loss gives completion percentage.
The tare weight (empty vessel) must be stable across readings. Other volatile losses — water, terpenes, residual solvent — are not accounted for and will inflate the apparent completion percentage if present.
Questions & limitations 3 answers
What does the apparent completion percentage measure?
The percentage compares measured mass loss against the theoretical CO2 mass that could be released from the entered THCa. Water, solvents and other volatile losses can make the displayed percentage too high.
Does a stable weight prove decarboxylation has finished?
No. A mass-loss plateau can occur for reasons unrelated to cannabinoid conversion. Chemical analysis is needed to establish the remaining THCa and formed THC.
Where are tracker sessions saved?
Sessions are stored in this browser’s IndexedDB on this device. They are not linked to an account. Clearing site data can erase them, so export a backup before changing browsers or clearing storage.