1 grain equals how many mg?

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Multiple Choice

1 grain equals how many mg?

Explanation:
1 grain is a legacy apothecary unit that converts to about 64.8 mg. The conversion comes from there being 7000 grains in a pound and 1 pound equaling 453.59237 g (which is 453,592.37 mg). So 1 grain = 453,592.37 mg / 7000 ≈ 64.8 mg, which we typically round to 65 mg for practical dosing. That’s why the commonly used value is about 65 mg per grain, while the other numbers are not close to the true conversion.

1 grain is a legacy apothecary unit that converts to about 64.8 mg. The conversion comes from there being 7000 grains in a pound and 1 pound equaling 453.59237 g (which is 453,592.37 mg). So 1 grain = 453,592.37 mg / 7000 ≈ 64.8 mg, which we typically round to 65 mg for practical dosing. That’s why the commonly used value is about 65 mg per grain, while the other numbers are not close to the true conversion.

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