Online "THC-calculators" and cleanout "timetables" should never be relied upon because there are so many variables to take into consideration to determine how long it takes for a person to get "clean". Variables that are not taken into consideration by the calculators and timetables. Frequency of useage, metabolic rates, GFRs, etc, etc, all vary from person to person.

Because of the variables involved, the only reliable way to gauge cleanout times is periodic testing with a THC test kit (using the first urination of the day for each time).

Given the seriousness and importance of being able to pass a U/A in order to gain/keep employment, gain/keep certain government-sanctioned assistance programs, or staying out of jail, why a person would want to rely on "estimations" and/or "probabilities" when s/he can take a THC test kit at home and know for sure?