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mcg or microgram is 10^-6 grams and mg or milligram is 10^-3 grams so 450mcg = .450mg

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Wiki User

15y ago

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More answers

1000 mcg = 1 mg. Therefore, 450 mcg = 450/1000 mg = 0.45 mg

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Wiki User

13y ago
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125mcg equals 0.125mg (1000mcg per mg).

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Wiki User

10y ago
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0.25mg

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Wiki User

13y ago
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12.5mg

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Anonymous

4y ago
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Q: 450 mcg equals how many mg?
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