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THC Calculator for Drug Test [Old + Updated]

NOTE!!! This online calculator is provided for informational purposes only. Remember that no one and nothing can say EXACTLY how long marijuana stays in YOUR body. It depends on many factors, such as age, weight, metabolism, amount and potency of marijuana, and the effect of THC detox products. This calculator is based on general information about the half-life of THC in the human body. This information isn't medical advice, so this website will not be held responsible if you are caught on a drug test.

Fifty nanograms of THC metabolites per milliliter defines a "presumptive positive" by NIDA (National Institute on Drug Abuse) certified labs. Your THC level must fall below 50 ng/mL marked with the RED line to pass a standard drug test.

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THC level, ng/mL

Updated 2023

The following calculator was created using information from various scientific research. Sources can be found here: https://cleanandhealthyme.org/blog/thc-half-life-urine-saliva-blood-sweat-hair.html

THC level, ng/mL

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If the level of THC in your urine is above the required level, you can accelerate the marijuana detox process by drinking more fluids, eating high-fiber foods, exercising, and using effective THC detox products.

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