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400 mg = 0.0004 kg

To convert from mg to kg, divide by 1 000 000.

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Wiki User

11y ago
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AnswerBot

8mo ago

There are 0.4 kg in 400 mg. You can convert milligrams to kilograms by dividing the number of milligrams by 1,000.

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Wiki User

15y ago

400mg = 4x10-4kg or 0.0004kg

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Wiki User

14y ago

40000000

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Q: How many kg in 400 mg?
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