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Milligram (mg) is a mass, while tablespoon (tbs) is a volume. You will need the density of the liquid or substance you are trying to measure to be able to perform the conversion. One tablespoon is 15 mL (15mL per tbs), and if you are just measuring water, you can assume that the density is 1000 mg/mL (or 1g/mL). To perform the conversion, you would first, take the mg of the substance, divide by the density (mg/mL), getting mL as the unit. Secondly, take the mL you got from the first step, divide the mL by 15mL/tbs, which would give you tbs as the unit.

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16y ago

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